Questions Asked on
November 17, 2010

math cal
A plane flying horizontally at an altitude of 3 mi and a speed of 480 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 6 mi away from the station. (Round to the nearest
asked by anna 
science
suppose you are an astronaut making a space walk outside your space station when your jet pack runs out of fuel. How can you use your EMPTY jet pack to get you back to the station?
asked by Katsa 
physics
You are watching an archery tournament when you start wondering how fast an arrow is shot from the bow. Remembering your physics, you ask one of the archers to shoot an arrow parallel to the ground. Unfortunately the archer stands on an elevated platform
asked by alejandrob 
Trig math
how to split up using sum and difference identities cos (13pi/12) PLeaseeeeeeeeeee help!!! thanx a million
asked by Sabrina 
consumer math
You are debating about whether to buy a new computer for $800.00 or a refurbished computer with the same equipment for $640.00. If a savings account earns 4.5% APR interest, how much do you really save with a refurbished computer if you put the difference
asked by Anonymous 
chemistry
Household hydrogen peroxide is an aqueous solution containing 3.0% hydrogen peroxide by mass. What is the molarity of this solution? (Assume a density of 1.01g/ml .)
asked by Anonymous 
physics
You push down on a 3 N box for 10 Minutes. How much work was done?
asked by tyd 
Organic Chemistry
The separation of a mixture of benzoic acid and benzoin in dichloromethane into its pure compounds by a combination of solvent extraction , distillation and recrystallization. Why is carbon dioxide evolved when the organic solution is shaken with sodium
asked by Davia 
chemistry
What is the molecular mass of cholesterol if 0.5731 mol weighs 221.6g? I need to show my work using conversion factors. thanks
asked by john 
chemistry........help!! =)
MaVa = MbVb can be used for the reaction between HCl and NaOH. Can it be used for the reaction between NaOH and H2C2O4 (oxalic acid, which can be found in rhubarb leaves, contains 2 acidic protons)? Explain your answer showing the balanced equation
asked by Stacy 
chemistry
Calculate the temperature change in the water upon complete melting of the ice. Hint: Determine how much heat is absorbed by the melting ice and then use q =mC*Delta T to calculate the temperature change of the 314 g of water. under the following
asked by jose 
physics
A worker pushes a wheelbarrow with a force of 40 N over a level distance of 6.0 m. If a frictional force of 24 N acts on the wheelbarrow in a direction opposite to that of the worker, what net work is done on the wheelbarrow?
asked by Anonymous 
math
what is 2.47 rounded to the nearest tenth?
asked by Lucy 
chemistry
The specific heat of ice is 0.5 calories/gram. 60 grams of ice will require _____ calories to raise the temperature 1°C. so i just do 0.5/60 ??
asked by Jon 
Chemisty
Describe how you would prepare 250 ml of a 0.10M NaCl solution?
asked by Tina 
chemistry
At 2200°C, K = 0.050 for the following reaction. N2(g) + O2(g) 2 NO(g) What is the partial pressure of NO in equilibrium with N2 and O2 that were placed in a flask at initial pressures of 0.75 atm and 0.30 atm, respectively?
asked by Anonymous 
Algebra
Juan charges $3.50 per hour for babysitting. Write a rule to describe the amount of money (M) earned is a function of the number of hours (h) spent babysitting. HELP PLEASE
asked by Johnny 
Physics
A stationary 25kg object is located on a table near the surface of the earth. The coefficient of kinetic friction between the surface is 0.30. Determind the acceleratin of the object.
asked by Charmaine 
chemistry
what is the delta u when 1.00mol of liquid water vaporizes @ 100C? The heat of the vaporization, delta h, of water @ 100C is 40.66kj/mol
asked by yesenia 
chemistry
Consider the reaction 2Al + 3CuSO4 = Al2(SO4)3 + 3Cu What is the maximum amount of Cu (63.5 g/mol) that could be produced by reacting 20.0 grams of Al (27.0 g/mol) with excess How do i do this?
asked by lance 
Physics
A ceiling fan is rotating at 0.70 rev/s. When turned off, it slows uniformly to a stop in 2.9 s. (a) How many revolutions does it make in this time? (b)Using the result from part (a), find the number of revolutions the fan must make for its speed to
asked by Shiva 
physics (work shown)
A 0.63kg block is hung from and stretches a spring that is attached to the ceiling. A second block is attached to the first one, and the amount that the spring stretches from its unstrained length quadruples. What is the mass of the second block? My work
asked by Sarah 
chemistry
if it requires 35.0 milliliters of 0.50 molar NaOH to neutralize 25.0 milliliters of HCl, what is the concentration of the HCl solution? Balanced equation: NaOH + HCl yields NaCl + H2O
asked by smith 
College Algebra
The population of the Earth is approximately 6 billion people and is growing at an annual rate of 1.9%. Assuming a Malthusian growth model, find the world population in 44 years.
asked by Brittney 
C++
I have no idea how to construct this program. Any help is appreciated. Thank you. In a population, the birth rate is the percentage increase of the population due to births and the death rate is the percentage decrease of the population due to deaths.
asked by Anon 
Math
You are using glass tiles to make a picture frame for a square photograph with sides 10 inches long. You want the frame to form a uniform border around the photograph. You have enough tiles to cover 300 square inches. What is the largest possible frame
asked by Amanda 
Physics
A charged particle moves into a region of uniform magnetic field B, goes through half a circle, and then exits that region. The particle is either a proton or an electron (you must decide which). It spends 155 ns in the region. a) What is the magnitude of
asked by LA 
AP Chemistry
To eject electrons from the surface of potassium metal, 222kJ/mol of electrons are needed. a) What minimum frequency of light is needed to supply the required energy? b) What is the wavelength of this light? c) If potassium is irradiated with light having
asked by qwerty123 
physics
In the figure below, two point particles are fixed on an x axis separated by a distance d. Particle A has mass mA and particle B has mass 4.00mA. A third particle C, of mass 96.0mA, is to be placed on the x axis and near particles A and B. In terms of
asked by Alex 
Physics
A Ferris wheel with radius 9.8 m rotates at a constant rate, completing one revolution every 36.6 s. Suppose the Ferris wheel begins to decelerate at the rate of 0.227 rad/s2 when a passenger is at the top of the wheel. Find the magnitude and direction of
asked by Sheva 
Physics
A plank 2.00 cm thick and 15.0 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. A man of mass 80.0 kg is forced to stand on the very end. IF the end of the board
asked by Amber 
Chemistry
At 5000 K and 1.000 atm, 83.00% of the oxygen molecules in a sample have dissociated to atomic oxygen. At what pressure will 99.0% of the molecules dissociate at this temperature?
asked by Anonymous 
Physics
A 120 kg astronaut (including space suit) acquires a speed of 3.00 m/s by pushing off with his legs from an 1900 kg space capsule. What is the change in speed of the space capsule? As the reference frame, use the position of the space capsule before the
asked by Linda 
chemestry
The bonds in SiCl4(l) are srtonger than the bonds in SnCl4(l)? True or false and why? Thank u
asked by joly 
Chemistry
how would you balance Al2(CO3)3> A;2O3+CO2
asked by Amanda 
Math
A candy bowl contained 723 candies. Some of the candies were red and the rest were green. There were twice as many green candies as red candies. How many red candies were in the candy bowl? Write an equation to solve this problem.
asked by lt 
Physics
A model airplane with a mass of 0.748 kg is tethered by a wire so that it flies in a circle 30.2 m in radius. The airplane engine provides a net thrust of 0.806 N perpendicular to the tethering wire. (a) Find the torque the net thrust produces about the
asked by Anonymous 
Physics
A 63 canoeist stands in the middle of her canoe. The canoe is 3.0 long, and the end that is closest to land is 2.6 from the shore. The canoeist now walks toward the shore until she comes to the end of the canoe. Suppose the canoeist is 3.3 from shore when
asked by Rhea 
physics
a golf ball with an initial angle of 38 degrees lands exactly 240 m down the range on a level course. neglecting air friction, what initial speed would achieve this result? using that initial speed, what is the maximum height reached by the ball?
asked by Anonymous 
chemestry
For the following reaction, 6.84 grams of benzene (C6H6) are mixed with excess oxygen gas. Assume that the percent yield of carbon monoxide is 71.1 %. 2 C6H6 (l) + 9 O2 (g) 12 CO (g) + 6H2O (g) (1) What is the theoretical yield of carbon monoxide ? __grams
asked by cristy 
11th grade
The following data are weights of hummingbirds (in grams) randomly selected from a population. Which histogram best portrays this data set? (You may want to use your TI83 to help you.)
asked by Anonymous 
math
The figure shown the chain drive of a bicycle. How far will the bicycle move if the pedals are rotated at 180°. Assume the radius of the bicycle wheel is 13.6 inches. There's a small circle w/a radius of 1.38 in and a large circle w/ 4.33 in.
asked by paula 
chemistry
Balance the equation: K2CrO4 + Na2SO3 + HCl > KCl + Na2SO4 +CrCl3 + H2O
asked by Anonymous 
physics
You are watching an archery tournament when you start wondering how fast an arrow is shot from the bow. Remembering your physics, you ask one of the archers to shoot an arrow parallel to the ground. Unfortunately the archer stands on an elevated platform
asked by michaelJ 
Calculus
How would you solve this problem: An airplane is flying in still air with an airspeed of 240 mph. If it is climbing at an angle of 22 degrees, find the rate at which it is gaining altitude.
asked by Anonymous 
Physics
A model airplane with a mass of 0.748 kg is tethered by a wire so that it flies in a circle 30.2 m in radius. The airplane engine provides a net thrust of 0.806 N perpendicular to the tethering wire. (b) Find the angular acceleration of the airplane when
asked by Anonymous 
Math
What is the minimum value of the function f(x)= 4x^2+24x+39
asked by Jessica 
physics
a square of edge length 15.0 cm is formed by four spheres of masses m1 = 8.00 g, m2 = 3.50 g, m3 = 1.50 g, and m4 = 8.00 g. In unitvector notation, what is the net gravitational force from them on a central sphere with mass m5 = 2.20 g?
asked by Amanda 
Physics
An object is solid throughout. When the object is completely submerged in ethanol alcohol., its apparent weight is 15.2 N. When completely submerged in water, its weight is 13.7 N. What is its volume? Steps please.. answer isnt really necessary
asked by david 
physics
An object is solid throughout. When the object is completely submerged in ethanol alcohol., its apparent weight is 15.2 N. When completely submerged in water, its weight is 13.7 N. What is its volume? Steps please.. answer isnt really necessary
asked by david 
Physics
1. A hollow sphere and a solid sphere roll without slipping down two different ramps. They start at different heights. The speed and kinetic energy of each sphere is the same when they reach the bottom of their ramp. If the hollow sphere has mass 3.25 kg,
asked by Joelle 
physics
A pendulum is constructed from a thin, rigid, and uniform rod with a small sphere attached to the end opposite the pivot. This arrangement is a good approximation to a simple pendulum (period = 5.97 s), because the mass of the sphere (lead) is much greater
asked by Dawb 
science
multiple select Select all of the items that are true about a sample of water vapor at 101°C as it cools. 1) Its temperature will fall continuously until it condensed into a liquid. 2) Its temperature will fall steadily until reaching 100°C. 3) The
asked by danny 
geometry
If a=6cm, find the area of the equilateral triangle. Round the answer to one decimal place.
asked by Anonymous 
statistics
A marketing research ﬁrm suspects that a particular product has higher name recognition among college graduates than among high school graduates. A sample from each population is selected, and each asked if they have heard of the product in question. A
asked by Joshua 
College Physics
An amusement park mirror shows anyone who stands 2.5 meters in front of it an upright image two times the person's height. What is the mirror's radius of curvature?
asked by Cheri 
british literature
Analyze Robert Browning's poem,"My Last Duchess" using the criteria for "good poetry" set forth by Elizabeth Barrett Browning in Aurora Leigh.
asked by jlew 
Physics
A block attached to a spring with unknown spring constant oscillates with a period of 6.0 s. What is the period if the mass is doubled?
asked by mike 
english
write five sentences about birthday celebration
asked by ramesh 
arithmetic
Find the sum of the first 40 terms of the arithmetic sequence. 19, 24, 29, 34
asked by Lindsay 
Physics
A copper wire has a resistance of 24 Ω at 20°C. An aluminum wire has three times the length and twice the radius of the copper wire. The resistivity of copper is 0.6 times that of aluminum. Both Al and Cu have temperature coefficients of resistivity of
asked by Trace 
College Algebra
Please help! x2y+z=7 2x+yz=0 3x+2y2z=2 a. Solve the above system of equations using Gaussian Elimination or GaussJordan Elimination. You must show row operations. b. Solve the above system of equations using Cramer's Rule.
asked by Roger 
Physics
An elevator cable breaks when a 950 kg elevator is 23 m above a huge spring (k = 2.3×105 N/m) at the bottom of the shaft. (a)Calculate the work done by gravity on the elevator before it hits the spring. (b) Calculate the speed of the elevator just before
asked by Sasha 
Chemistry 110
How many grams of Au2S can be obtained from 1017 mol of Au? The answer is 249. How did they get that?
asked by Kim K 
history
How did the Indian reeducation movement affect young Native americans?
asked by ... 
chemistry
how do i solve the following problem? Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2NO2 → 2NO + O2 In a particular experiment at 300°C, [NO2] drops from 0.0100 to 0.00650 M in 100 s. The rate of Disappearance of NO2 for this
asked by jess 
Chemistry
How many milliliters of a 0.75 M HCL solution do you need to obtain 0.0040 mol of HCL?
asked by Cindy 
Physics
A weather ballon is designed to expand to a maximum radius of 20 m at its working altitude, where the air pressure is 0.030 atm and the temperature is 200 K. If the ballon is filled at atmospheric pressure and 300 K, what is its radius at liftoff?
asked by Y0gi 
physics
A 2.15 kg mass is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of 18.7 N is required to hold the mass at rest when it is pulled 0.205 m from its equilibrium position (the origin of the x axis). The mass is now
asked by Anonymous 
british literature
Explain what we learn about Captain Brown from the narrator of "Our Society at Cranford." please help with website, links or anything thanks
asked by 12th grader amer 
physics
When it is 152 m above the ground, a rocket traveling vertically upward at a constant 9.50 m/s relative to the ground launches a secondary rocket at a speed of 12.4 m/s at an angle of 50.0 degrees above the horizontal, both quantities being measured by an
asked by alejandrob 
Math
Put parentheses and brackets in the proper places to make the following equation true: 9x3+85+6squared=58
asked by Abbie 
9th grade physics
A sled of mass 50 kg is pulled along a snowcovered, flat surface with a force of 200 N. the friction force acting on the sled is 49 N. what is the acceleration?
asked by Cristian 
british literature
Explain the theme of Robert Browning's poem "Love Among the Ruins."
asked by jlew 
chemistry
how do i solve the following problem? Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2NO2 → 2NO + O2 In a particular experiment at 300°C, [NO2] drops from 0.0100 to 0.00650 M in 100 s. The rate of Disappearance of NO2 for this
asked by jess 
Math: Statistics
A study of elephants wishes to determine the average weight of a certain subspecies of elephants. The standard deviation of the population is 2,014 pounds. How many elephants need to be weighed so we can be 93% confident to be accurate within 325 pounds?
asked by Anonymous 
Math
A volleyball is his upward by a player in a game. The height h (in fee) of the volleyball after t seconds is given by the function h=16t^2+30t+6. What is the maximum height of the volleyball? explain your reasoning.
asked by Billy 
english
What kind of plays did Euripides write? allegories tragedies comedies miracle plays mystery plays morality play
asked by danny 
Algebra
This is about direct variation. The area a painter can paint varies directly with the amount of time he works. One morninig, he painted 204 ft² between 8 a.m. and 12:15 PM. Write a direct variation equation to describe the area y covered in x hours. The
asked by David 
calculus
Use differentials to estimate the amount of tin in a closed tin can with diameter 6 cm and height 14 cm if the tin is 0.046 cm thick.
asked by Bob 
british literature
Summerize the denouement of THE IMPORTANCE of BEING EARNEST.
asked by jlew 
physical science
decribe an experiment you could perform to determine the average speed of a toy car rolling down an incline
asked by londan 
Math
Please help! x2y+z=7 2x+yz=0 3x+2y2z=2 a. Solve the above system of equations using Gaussian Elimination or GaussJordan Elimination. You must show row operations. b. Solve the above system of equations using Cramer's Rule.
asked by Angel 
Chemistry
What is the minimum amount of 1.75 m of HCL necessary to produce 28.5 L of H2 at stp? EQUATION IS AS FOLLOWS: Mg+2HCL>>MgCl2+H2
asked by Ricardo 
chemistry
A sample of a gas occupies a volume of 1158 mL at 59ºC and 0.76 atm. What would be the new volume if temperature decreases to 40ºC and pressure increases to 1.40 atm?
asked by Chris 
chemistry
how many moles of naoh could be absorbed by a so3 hso3 buffer before the case absorbing the capacity of the buffer is destroyed?
asked by joe breckinridge 
british literature
In Matthew Arnolds' poem, "Dover Beach," what does the speaker have in common with Sophocles?
asked by jlew 
chemestry
The oxide ion O2 has the same electron configuration as neon?
asked by joly 
precal
Find the value of sec theta for angle theta in standard position if the point at (–2, –4) lies on its terminal side. If 0° lessthanorequalto x lessthanorequalto 360°, solve the equation sec x = –2. The terminal side of an angle theta in standard
asked by hannah 
Accounting
Need help with this bank reconciliation...this is actually for a job and I am forgetting everything about accounting because I am nervous. BANK RECONCILATION ============================================== On Aug 14th, One of our Partner's ( Compuville )
asked by Tiffany 
chemistry
A. ) A goodyear blimp typically contains 5400 m cubed of helium at an absolute pressure of 1.1*10^5 Pa. The temperature of the helium is 280 K. What is the mass (in kg) of the helium of the blimp? B. ) Estimate the spacing between the centers of
asked by joe 
Chemistry
help please! At 5000 K and 1.000 atm, 83.00% of the oxygen molecules in a sample have dissociated to atomic oxygen. At what pressure will 99.0% of the molecules dissociate at this temperature?
asked by Alyssa 
contemporary Math
If there are 2 red disks numbered 1 through 2, and 6 yellow disks numbered 3 through 8, find the probability of selecting a red disk, givent that an oddnumbered disk is selected?
asked by Savannah 
physics
An object is solid throughout. When the object is completely submerged in ethanol alcohol., its apparent weight is 15.2 N. When completely submerged in water, its weight is 13.7 N. What is its volume? Steps please.. answer isnt really necessary
asked by david 
math
If you cut a 21 foot ribbon in four equal lengths how many feet long is the length of each ribbon?
asked by michelle 
Chemistry
Calculate the H3O+ concentration and pH of a carbonated beverage that is .10 M in dissolved CO2 (Essentially all of the H3O+ comes from the first stage of dissociation, CO2 + 2H2O = H3O^+ + HCO3, for which K1 = 4.4 x 10^7)
asked by Kate 
5 th grade English
I need help with these words it;s Analogies. 1.chair is o tableas stool is to ______? 2.hurry is to run as stroll is to _____? next is antonyms opposite of Enormous____ and release____? please !!help me i can't find it thanks!
asked by pat 
Statistics
A fair coin is tossed seven times. what is the probability of getting at least one tail?
asked by Maryan 
math
you spend a total of 25 minutes typing an email and writing a letter. you can type 6o words a minute and write 20 words a minute. let m be the minutes you type the email. write an expression in terms of m for the total number of words you wrote. evaluate
asked by courtney 
US History
Why was President Johnson impeached? Was it the right action to take??
asked by anthony 
Algebra
At a flea market held each weekend, an artist sells handmade earrings. The table below shows the average number of pairs of earrings sold for several prices. Given the pattern in the table, how much should the artist charge to maximize revenue? Table:
asked by Pedro 
Math
Sarah spends 2/5 of her monthly income on rent. Sarah's rent is $750. What is sarah's montly income? Write an equation to solve this problem.
asked by lt 
british literature
Analyze Robert Browning's poem, "My Last Duchess" using the criteria for "good poetry" set forth by Elizabeth Barrett Browning in AURORA LEIGH. Please point me in the right direction.
asked by 12th grader amer 
Physics
A plank 2.00 cm thick and 15.0 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. A man of mass 80.0 kg is forced to stand on the very end. IF the end of the board
asked by Amber 
chemistry
What volume of 9.54M sodium chloride solution must be added to the correct amount of water to produce 750. mL of a .327 M sodium chloride solution?
asked by Dee 
Chem 141
Write the three thermochemical equations needed to calculate the delta H for the below reaction.? 2Mg(s) + O2(g) > 2 MgO(s) delta H rxn = ? (Include delta H values in kJ for each reaction)
asked by Barbara 
chemestry
A student weighs out a 14.0 g sample of Fe(NO3)2, transfers it to a 500 mL volumetric flask, adds enough water to dissolve it and then adds water to the 500 mL tic mark. What is the molarity of iron(II) nitrate in the resulting solution?
asked by cristy 
physics
Three uniform spheres are located at the corners of an equilateral triangle. Each side of the triangle has a length of 3.30 m. Two of the spheres have a mass of 3.10 kg each. The third sphere (mass unknown) is released from rest. Considering only the
asked by Ashley 
math
This is about direct variation. The area a painter can paint varies directly with the amount of time he works. One morninig, he painted 204 ft² between 8 a.m. and 12:15 PM. Write a direct variation equation to describe the area y covered in x hours. The
asked by Jeff 
Chemisty
Nitric acid is abailable commercially at a concentration of 16M. What volume would you use to prepare 750 ml of a 0.20 M solution?
asked by Julie 
algebra
2. How many pounds of chocolate worth $1.20 a pound must be mixed with 10 pounds of chocolate worth 90 cents a pound to produce a mixture worth $1.00 a pound? What Do I Know? What Do I Want to Know? Assign Variables Write a verbal Model: How Do I Find the
asked by peg 
physics
I know this has been posted many times but I keep trying and cannot get the right answer, A place kicker must kick a football from a point 39.9 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked the
asked by melissa 
English
When you are looking at a work by Monet, stand back at least fifteen or twenty feet. simple, compound, complex, compoundcomplex complex
asked by Hayley 
English
Between Asia and Africa lies a land bridge that is known as the Sinai Peninsula. Would this be a simple sentence?
asked by Hayley 
Math
a long distance phone company charges $3 for a phone call plus $0.75 for each minute of the call. What !@#$%^&tion does this situation give rise to? Find the formula and make a table for this function.
asked by lt 
geometry
The length of one base of a trapezoid is 19 meters and the length of the median is 23 meters. Find the length of the other base.
asked by Shaquaya 
Chemistry
If 10.00 g of C2H2 is mixed with 80.0 g of Br2, what masses of C2H2Br2 and C2H2Br4 will be formed? Assume that all the C2H2 has reacted.
asked by Nicole 
physics help!!
A body at given uniform temperature of 300K and internal energy 8x10^6 J is split in two equal halves: a)Has any heat been exchanged b)What is the temperature of each half? c)What is internal energy of each half? K=Kelvin
asked by carla 
geometry
find the measure of an angle that is supplementary to an angle of size 35 degrees, 1 inch, 51 inches
asked by kyle 
physics
A 9.0 x 10^3 kg ball is attached to a 3.6 x 10^2 mass (M) by string that passes through a hole in a horizontal frictionless surface. The ball travels in a circular path of radius 0.35 m. What is the speed of the ball? I know the answer is 3.7 m/s, but
asked by cel 
physics
Please help me A 2 kg rock is released from rest at a height of 29 m. Ignore air resistance and determine the kinetic energy, gravitational potential energy, and total mechanical energy at each of the following heights;20m 15m 9m
asked by Jay 
Physics
The diameters of the main rotor and tail rotor of a singleengine helicopter are 7.59 m and 0.98 m, respectively. The respective rotational speeds are 456 rev/min and 4143 rev/min. Calculate the speeds of the tips of both rotors. main rotor: tail rotor:
asked by Anonymous 
chemistry
how do i solve the following problem? Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2NO2 → 2NO + O2 In a particular experiment at 300°C, [NO2] drops from 0.0100 to 0.00650 M in 100 s. The rate of Disappearance of NO2 for this
asked by jess 
Math
A painter leans a ladder against a vertical wall. The top of the ladder is 7 meters above the ground. When the bottom of the ladder is moved 1 meter farther away from the wall, the top of the ladder is 5 meters above the ground. What is the length of the
asked by HELP PLEASE 
philosophy
Supply the missing premise or conclusion of the ff. enthymeme in such a way that the resulting syllogism is valid. Write the resulting syllogism in standard form and test it for validity using a Venn diagram. What things would you into account in
asked by Claudia 
math
A car radiator has a 6liter capacity. If the liquid in the radiators 40% antifreeze, how much liquid must be replaced with pure anitfreeze to bring the mixture up to a 50% solutions? If I told you the answer is 1 liter, in your own words, using complete
asked by shannon 
physics
Lake Erie contains roughly 4.00 multiplied by 1011 m3 of water. (a) How much energy is required to raise the temperature of that volume of water from 11.0°C to 13.0°C? J (b) How many years would it take to supply this amount of energy by using the 950MW
asked by john 
english
Please help me with this assignment that I have to explain t o class tomorrow. I am confused and don't know where to start. I have to use "SmartArt" to make graphic organizer.I picked chart and my topic is speech. The chart/graphic that I am going to make
asked by Laura 
org chm
how many grams of KOH are needed to make 590 ml of a solution with a pH of 11.35?
asked by carol 
british literature
Describe each part of the plot of Alfred,Lord Tennyson's poem THE LADY OF SHALOTT.
asked by jlew 
Chemistry 22
Other than a specific confirmatory test, give a simple test that would allow you to distinguish between the following pairs of anions and cations. Tell what you would do and what you should observe for each anions and cations. Anions: a. CO3 2 and NO3 
asked by Ivy 
physics
an atwoods machine has a solid cylindrical pulley with a mass of 200g and a radius of 10cm. a 1.2 kg mass is hung on one side and a 1.1kg mass on the other side, find the acceleration of the two masses and the itme for them to travel a distance of 60cm
asked by chris 
math
Mrs. Rossi wrote the following clus for a mystery 4digit number. .The tens digit is twice the one digit .The hundreds digit is twice the ones digit. .The ones digit is 3. .The sum of the digits is 19. What is the mystery number? show the work.
asked by gabriella 
physics
An object has a total energy that is two times its rest energy. What is its speed? Give answer in c. what equation do i use to solve this? step by step anyone?
asked by VJC 
Fine Art
17. During _______, the historian is concerned with the finding out if the artwork represents a particular style of art. a. analysis b. criticism c. interpretation d. inspiration ? 20. Effective organization of the elements of art is important when looking
asked by mysterychicken 
Sexually Transmitted Infections
What are the temporary and unending term results of contracting an STI? I know that STI's are Sexually Transmitted Infections, but I don't know the above question.
asked by Anonymous 
Math
I'm after understanding more than an answer but an answer would be greatly appreciated. The question reads as "On the answer sheet for this question is shown an xy graph of the function [y(x)=x^2cos(3x)] Add to that same picture a rough sketch of the
asked by Jack 
pre algebra
you spend a total of 25 minutes typing an email and writing a letter. you can type 6o words a minute and write 20 words a minute. let m be the minutes you type the email. write an expression in terms of m for the total number of words you wrote. evaluate
asked by courtney 
physiscs
A 2 kg rock is released from rest at a height of 29 m. Ignore air resistance and determine the kinetic energy, gravitational potential energy, and total mechanical energy at each of the following heights;20m 15m 9m
asked by Jay 
chemistry
Wrtie the equilibrium constant expression for the reaction of NH3 with water. the OH concentration of .050 M ammonia, NH3, is 9.5 x 10^4 M
asked by Stacey 
physics
A 2 kg rock is released from rest at a height of 29 m. Ignore air resistance and determine the kinetic energy, gravitational potential energy, and total mechanical energy at each of the following heights;20m 15m 9m * physics  bobpursley, Wednesday,
asked by Jay 
physics
A 1000 kilogram car traveling at 25 mph hits a 60 kg person. How much force is exerted on the person?
asked by Megan 
social studies
Is change in a student's appearance an adequate way to evaluate the success of Native American boarding schools?
asked by Anynomous 
Math. HELP!
A cylinder is to be made of circular crosssection with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the crosssection of the cylinder. Maybe it's the wording, but I
asked by Thomas 
math
Use a linear approximation (or differentials) to estimate the given number. e^0.01
asked by jj 
physics
0.1kg of ice initially at a temperature of 10 degrees Celsius is added to a cup with .5kg of water initially at 20 degrees Celsius. The water and ice are isolated thermally from their surroundings. The specific heat of ice is 2000 J/kgoC, the specific
asked by Raquel 
british literature
Explain the theme of Robert Browning's poem "Love Among the Ruins." Please point me in the right direction.
asked by 12th grader amer 
Algebra
6x^211x10=(3x+2)(2x+k)
asked by Jessica 
philosophy
Supply the missing premise or conclusion of the ff. enthymeme in such a way that the resulting syllogism is valid. Write the resulting syllogism in standard form and test it for validity using a Venn diagram. What things would you take into account in
asked by Claudia 
chemistry
If 380. mL of 0.4294 M aqueous CaBr2 and 250. mL of 0.5880 M aqueous SO42 are reacted stoichiometrically according to the equation, how many mol of CaBr2 remained? Al2(SO4)3(aq) + 3 CaBr2(aq) → 2 AlBr3(aq) + 3 CaSO4(s)
asked by Confused 
social studies
In what ways did Greek culture develop differently from Italian culture after the division of the Roman Empire
asked by tony 
bussiness maths
using the graphical method solve the following linear programing problem maxmise objective function p=3x+y.subject to following constrains 6x+4y0
asked by judith 
Math
Considering the doubling plus one function: The output is 2 times the input, plus one. For example, if the input is 3 the out put is 7. Determine which of the following points are on the graph of the doubling plust one !@#$%^&tion: (2,5), (2,8), (1,1),
asked by Michelle 
Chemisty
Kaochlor, a 10% (m/v) KCl solution, is an electrolyte solution. How many milliequivalents of K+ are in a 30 ml dose.
asked by Susie 
math
compare the annual percentage yield for three banks. Bank 1 offers an APR of 3.8% compounded daily; bank 2 offers an APR of 4.1% compounded monthly; bank 3 offers an APR of 4.5% compounded quarterly
asked by geri 
algebra
2. How many pounds of chocolate worth $1.20 a pound must be mixed with 10 pounds of chocolate worth 90 cents a pound to produce a mixture worth $1.00 a pound? What Do I Know? What Do I Want to Know? Assign Variables Write a verbal Model: How Do I Find the
asked by peg 
physics
I know this has been posted many times but I keep trying and cannot get the right answer, A place kicker must kick a football from a point 39.9 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked the
asked by melissa 
geometry
Emma has 26 feet of fence. She wants to make the largest rectangular area possible for her rabbits to play in. What length should she make each side of the rabbit pen?
asked by Jeremy 
Chemistry
A. ) A goodyear blimp typically contains 5400 m cubed of helium at an absolute pressure of 1.1*10^5 Pa. The temperature of the helium is 280 K. What is the mass (in kg) of the helium of the blimp? B. ) Estimate the spacing between the centers of
asked by joe 
Algebra
Form a polynomial f(x) with real coefficients having the given degree and zeros. Degree 5; zeros:1;i; 7+1
asked by Kaylee 
math
A painter leans a ladder against a vertical wall. The top of the ladder is 7 meters above the ground. When the bottom of the ladder is moved 1 meter farther away from the wall, the top of the ladder is 5 meters above the ground. What is the length of the
asked by HELP 
Algebra HELP
h(x)= 3x^(5) + 2x^(4) + 15x^(3) + 10x^(2)  528x  352 for this equation how would I know to use the square root of 11 in synthetic division to be a factor? I used the p / q list but I did not get sqt root of 11 as a possible factor. could someone help
asked by Amy 
physics
A 1000 kilogram car traveling at 25 mph hits a 60 kg person. How much force is exerted on the person?
asked by Megan 
math
I Have to solve for an equation 6
asked by Anonymous 
science
. What must happen in order for a sound wave to form? A. An electric current must flow. B. A certain frequency must be reached. C. Matter must vibrate. D. Volume must be absorbed.
asked by david 
math
A painter leans a ladder against a vertical wall. The top of the ladder is 7 meters above the ground. When the bottom of the ladder is moved 1 meter farther away from the wall, the top of the ladder is 5 meters above the ground. What is the length of the
asked by james 
Physics/Chemistry
few other questions. 1.) Suppose you expend 430 kilocalories during a long walk, how many liters of ice water at 0 degrees do you need to consume in order to use up the 430 kilocalories of metabolic energy. Stomach can hold 1 liter. 2. A person eats a
asked by david 
calculus 2 or physics
An underground tank full of water has the following shape 1) hemisphere of radius 5 m at the bottom 2) a cylinder of radius 5 m and height 10 m in the middle 3) a circular cone with base radius 5 and height 4 m at the top The top of the tan is 2 m below
asked by John 
physics
what is the symbolic expression for the wavelength ë of a photon in terms of its energy E, Planck's constant h, and the speed of light c.
asked by Jessica 
12th grade
what is genetic engineering?
asked by marcia 
Physics/Chemistry
few other questions. 1.) Suppose you expend 430 kilocalories during a long walk, how many liters of ice water at 0 degrees do you need to consume in order to use up the 430 kilocalories of metabolic energy. Stomach can hold 1 liter. 2. A person eats a
asked by david 
philosophy
Supply the missing premise or conclusion of the ff. enthymeme in such a way that the resulting syllogism is valid. Write the resulting syllogism in standard form and test it for validity using a Venn diagram. What things would you take into account in
asked by Claudia 
algebra
Mixture Problems Template – Price Problems Copy the problem from the lesson: 1. A store manager wishes to reduce the price on her fresh ground coffee by mixing two grades. If she has 50 pounds of coffee which sells for $10 per pound, how much coffee
asked by bianca 
physics
A fireman tosses his 0.863kg hat onto a peg, where it oscillates as a physical pendulum. If the center of mass of the hat is 8.32 cm from the pivot point, and its period of oscillation is 0.762 s, what is the moment of inertia of the hat about the pivot
asked by Anonymous 
Algebra
I am great at math but for some reason can not wrap my brain around Algebra for the world! Please Help!! Im stumped! Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 3x –
asked by June 
Math
A cylinder is to be made of circular crosssection with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the crosssection of the cylinder. Maybe it's the wording, but I
asked by Thomas 
English
explain Douglass's point that "The holidays are part and parcel of the gross fraud,wrong, and inhumanity of slavery.
asked by Attalah:) 
Maths
Multiplechoice questions in a test are graded by adding 2 marks for each correct response and subtracting 1 mark for each incorrect response (including no response). Rory and Jenny answered all the multiplechoice questions, with Rory scoring 27 and Jenny
asked by Jannie 
math
put these in order from least to greatest. 0.145,0.15,0.155,0.1 1/12,0.12,1/20,0.20,1/6,0.6,0.06,0.16 Can someone please help me somehow a tip would be more useful than the answer though
asked by Johnson 
chemistry
0.35 grams of an unknown solid containing magnesium hydroxide is combined with 50 mL of 0.25M nitric acid. If 34.5mL of 0.1 NaOH was required to reach an endpoint, determine the concentration of magnesium hydroxide inthe sample.
asked by Steve 
chemistry
CO (g) + Cl2 (g) ↔ COCl2 (g In one experiment, 0.93 bar of CO was combined with 1.01 bars of Cl¬2 in a reaction vessel at 700K. After the system reached equilibrium, the total pressure was 1.24 bars. Calculate Kp0 for the system.
asked by Dirk 
geometry
draw an acute scalene triangle ABC in the center of your paper with sides approximately 8cm 10cm and 16cm
asked by bob 
chemistry
10.0 mL of 0.15M of sulfuric acid is titrated with 0.05M of sodium hydroxide. how many mL of sodium hydroxide solution are required to reach the equivalence point?
asked by tim 
physics
A truck increases its speed from 8 m/s to 28 m/s over a distance of 120 m? How long does this take? Assume that the acceleration is constant
asked by TERI 
chemestry
How many mL of a 0.217 M aqueous solution of ammonium fluoride, NH4F, must be taken to obtain 3.63 grams of the salt?
asked by cristy 
Life Science
two organisms were found to have different genotypes but the same phenotype. Predict what these phenotypes might be? and Explain
asked by Caitlin 
chemistry
What is the balanced molecular equation and their physical state of each substance of barium chloride and 3 M sulfuric acid?
asked by jay 
Physics
During a severe storm in Palm Beach, Fla., on January 2, 1999, 31 inches of rain fell in a period of nine hours. Assuming that the raindrops hit the ground with a speed of 14 m/s, estimate the average upward force exerted by one square meter of ground to
asked by Sharon 
Info. Tech (Computer Science)
1.)(a) CPU 1 has speed of 2.6 GH (steps per second) and runs a program which needs 10.9 T steps. (b) CPU 2 has speed of 2.2 GH and runs program which needs 7.3 T steps. How long does it take for CPU 1 and CPU 2 to finish the work? (Show all work!)
asked by Nate 
Statistics/Math Please Help
How can you determine if you are using a two tailed test vs a one tailed test? For example, for the below, which test would I use? Based on this data, at α =.01, can we conclude that the proportion of democrats who favor “junk food" tax is more than 5%
asked by Donny 
Math. HELP!
A cylinder is to be made of circular crosssection with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the crosssection of the cylinder. Maybe it's the wording, but I
asked by Thomas 
ExplainEnglish
Prof. Gottfried says a reaction against multiculturalism and the dislocations it has introduced "is one possible reaction, but I don't think it's likely to occur. I think that there may be in the future more careful surveillance of suspiciouslooking
asked by Thara 
physics
A 7 kg block slides on a horizontal frictionless surface with a speed of 1.2 m/s. It is brought momentarily to rest when it hits a bumper that compresses a spring. The acceleration of gravity is 9.8 m/s^2.
asked by Jeann 
Math
Is it possible to make a rectangle with a perimeter of 24 and an area of 32, and what would it look like?
asked by Taylor 
geometry
Julian is interested in building a new house. Three architects have given him plans. The first plan is for a house that will be 2,250 square feet. The total cost of the house will be $281,250. The second plan is for a house that will be 2,400 square feet.
asked by Anonymous 
Chemistry
Why are the alkali and alkaline earth metals more reactive than other elements on the periodic table?
asked by Caitlyn 
Trigonometry
Prove that 1/sin thetatan theta and  1/cos theta = 1/cos theta and + 1/sec theta+tan theta
asked by Rahul 
chemistry
120 ml of oxygen gas was collected over water at a barometric pressure of 732.0 torr and 23 degrees celsius. what is the partial pressure of the oxygen?
asked by kayla 
Physics
Yocelyn is lifting a 10.0 kg bucket from a well. She wants the bucket to accelerate to the top of the well at 2.0m/s^2. How much force does she need to apply to the bucket through the rope in order to accelerate the bucket up to the surface?
asked by Victoria 
english
in the story "civil Peace" jonathan iwegbu reiles on the proverb "nothing puzzles god." what significance does the proverb hold for him? does it provide an explanation for events, or is its meaning more complex?
asked by denae 
earth
which two rocks are primarily composed of a mineral that bubbles with acid?
asked by maria 
Physics
A typical coalfired power plant burns 310 metric tons of coal every hour to generate 790 MW of electricity. 1 metric ton= 1000 kg. The density of coal is 1500 {\rm kg}/{\rm m}^{3} and its heat of combustion is 28 \;\rm MJ/kg. Assume that all heat is
asked by Jennifer 
college chemistry
10.0 mL of 0.15M of sulfuric acid is titrated with 0.05M of sodium hydroxide. how many mL of sodium hydroxide solution are required to reach the equivalence point?
asked by tim 
Chemistry
Explain why the Noble Gases are unreactive
asked by Hailey 
probability
a circular dartboard of tedious 1 foot is at a distance of 20 feet from you.you throw a dart at it and it hits the dart board at some point q.what is the probability that q is closer to the center of the circle than the periphery ?
asked by Prabhat Ghosh 
english
i am looking for the main topic in this paragraph would it be In society today more and more people are making the wrong choices to protect their wellbeing and overall health. In society today more and more people are making the wrong choices to protect
asked by vicky 
chemistry
If 267 mL of O2, measured at STP, are obtained by the decomposition of the KClO3 in a 3.33 g mixture of KCl and KClO3, 2KClO3(s) > 2KCl(s) + 3O2 What is the percent by mass of KClO3 in the mixture?
asked by kayla 
math
i give you 9 tennis balls, all look identical in every way, 8 weigh exactly the same, one weighs an ounce or so more than the other 8. i give you a weight scale (like the scales of justice) and tell you that you can use the scale only twice and put as many
asked by Anonymous 
physics
A man runs with a speed of 6 m/s off a platform that is 10m above the water. How fast is he moving when he heats the water
asked by Jay 
Chemistry
A helium baloon has a volume of 28.9L, what is the mass of helium inside the ballon? what is the mass of the same volume of air it displaces? MM of air = 29.0g/mol, 25C (temperature) and 1 atm.
asked by Ashley 
11th grade
Find the lowest common denominator of the rational expression: 1/m = (m34) / 2m squared
asked by Brandon 
ExplainEnglish
Contrary to some public and media discourse that multiculturalism is divisive and perpetuates enclavism and separate identities, this article describes a variety of multicultural common spaces wherein Canadians of all backgrounds interact and together
asked by Thara 
Javascript
Can you check my code and tell me why the prompts are not showing up on the webpage: Homework 8 I like the color purple.
asked by Anonymous 
English
what are some good quotes about life?
asked by Rebecca 
English
1. There are a lot of empty milk packs which we can recycle. 2. There are a lot of empty milk cartons which we can recycle. (Are both the same? Is 'milk carton' milk pack?
asked by rfvv 
english
i need to know if my sentences and grammar are clear, and if i have the correct topic sentence for each paragraph correct. 1. If something will cost more than what it is worth because, you do not have the money to buy it is you can purchase it by financing
asked by erica 
short story, part 2
an auther's purpose in using rhetoric is to? a. create a certain effect for the reader b. present facts as they realy are c. provide hints as to whats going to happen d. separate realism from idealism
asked by tom 
college chemistry
10.0 mL of 0.15M of sulfuric acid is titrated with 0.05M of sodium hydroxide. how many mL of sodium hydroxide solution are required to reach the equivalence point?
asked by tim 
Math
A shirt is on sale for 25% (1/4) off. Its original price was $12. How much is the shirt now?
asked by Kev 
physics
A 7 kg block slides on a horizontal frictionless surface with a speed of 1.2 m/s. It is brought momentarily to rest when it hits a bumper that cmopresses a spring. The acceleration of gravity is 9.8m/s^2. How much is the spring compressed if its force
asked by Jeann 
chemistry
If I make an ice pack with 750mL of water, what mass of ammonium chloride must I include to get the temperature to drop from room temperature (20 degrees C) to 5 degrees C?
asked by Cody 
3rd grade
Mr Samuel has 150 pennies in two jars. There are 40 more pennies in one jar than in the other. How many pennies are in each jar?
asked by Anonymous 
US History
I don't understand this. I have a graph in my American history and it is labeled on the side "1995 Dollars in Billions" In 1965, it has $264 and in between 1965 and 1970, it is at $352 and then in 1970, it goes back down to about $264 again. Then the
asked by anthony 
Science
When served at 200 km/h (124 mph), what is the equivalent weight exerted on the tennis ball?
asked by Alex 
chemistry
how do I calculate what temperature is needed to heat 52 grams of ethane to occupy 1200ml?
asked by david 
chemistry
10.0 mL of 0.15M of sulfuric acid is titrated with 0.05M of sodium hydroxide. how many mL of sodium hydroxide solution are required to reach the equivalence point?
asked by tim 
british literature
Explain what we learn about Captain Brown from the narrator of "Our Society at Cranford."
asked by jlew 
chemistry
Suppose that "element A" has a valence number of 3 and"element B has a valencenumber of 2. If the two numbers combine,then when writing the formula for resulting in the compound what subscript number will be given to element "B
asked by Anonymous 
chemistry
CO (g) + Cl2 (g) ↔ COCl2 (g In one experiment, 0.93 bar of CO was combined with 1.01 bars of Cl¬2 in a reaction vessel at 700K. After the system reached equilibrium, the total pressure was 1.24 bars. Calculate Kp0 for the system.
asked by jason 
math
A man asks for a loan for $5,000 for 14 days. He receives the loan plus $45 in interest. What annual interest did the man pay. How much would the man need to repay at the end of two months if he borrowed $5ooo with the same rules and the same annual
asked by geri 
Science: Chemistry
A sample of a gas at 0.73 atm occupies a volume of 245 mL. If the temperature remains constant, what will be the new pressure if the volume increases to 633 mL?
asked by Chris 
Statistics
There are 6 cards numbered from 1 to 6. They are placed into a box, and then one is drawn and put back and then another card is drawn and put back. what is the probability that one of the cards was 5 if the sum of the two was 8?
asked by Maryan 
chemistry
what is the balanced molecular equation and their physical state of each substance for: copper(II) sulfate and 10% sodium hydroxide?
asked by kayla 
math
A=1/2bh A= 1/2 ? ? A= 180 what could the base and height be?
asked by Zach 
UNIVERSITY COMPOSITION AND COMMUNICATION I (AXIA)
Students are often confused about the use of the words good and well in their writing. Write a 100word passage to Susan Anker, the author of the course’s textbook, in which you describe five details from her book that are good and five details about the
asked by Jack 
US History
Why did FDR instill confidence when he took office? I need examples.
asked by anthony 
5th grade Science
Please unscramble this word "qrtueo" its for science
asked by Krystal 
Ms.Sue
Sorry for asking the same question twice,I will go through it and provide a good answer.Please let me post though.Please give me the permission to post.I am the person who asked about the STI's.
asked by Anonymos 
Math30
An angle with a negative rotation passes through the point(5,8). To, the nearest degree what is the measure of the angle?
asked by Bulbul 
Financial and managerial accounting
1. Use the following data for questions 1 and 2.On March 12, 2005, Trio, Inc. acquired melting equipment for $37,000. The estimated life of the equipment is 7 years, with an estimated residual value of $9,000.Refer to above data. In its financial
asked by tom 
Algebra
For this problem, tell whether each relationship is a direct variation. Explain. x  3  6  9  y  18  36  54  My teacher didn't really explain direct variation very well, but i did catch that you put x over y. (Hopefully this helps)
asked by David 
Algebra
This is my third question about direct variation. For this problem, tell whether each relationship is a direct variation. Explain. x  1  5  8  y  1.5  7.5  12 
asked by David 
Precalculus
State the amplitude, period, and phase shift of the function. h(t)=9cos(7tPie/5)
asked by Anonymous 
math
Three rectangles have exactly the same area. The dimensions of each rectangle (as length and width) are a and b; a – 3 and b + 2; and a + 3 and b – 1. Find the area of the rectangles.
asked by HELP 
chemestry
Based upon the previous two questions, consider the magnesium nitride addition reaction again. This time, suppose you start with 10.0 g of each reactant. What is the maximum number of MOLES of Mg3N2 that could be produced in this case? Remember that the
asked by cristy 
Math: Calculus
You are given the four points in the plane A = (5,6), B = (9,1), C = (14,6), and D = (19,2). The graph of the function f(x) consists of the three line segments AB, BC and CD. Find the integral f(x)dx from 5 to 19 by interpreting the integral in terms of
asked by REALLY NEED HELP!!!! 
Math
A full bottle fo juice cost $2. If the juice cost $1.50 more than the cost of the bottle, how much does the empty bottle cost? (it is not 50c)
asked by Yan 
Calculus 2 / Physics
An underground tank full of water has the following shape 1) hemisphere of radius 5 m at the bottom 2) a cylinder of radius 5 m and height 10 m in the middle 3) a circular cone with base radius 5 and height 4 m at the top The top of the tan is 2 m below
asked by John 
Math
I need to write the specified ratin as a simplified fraction. A certai lake is 1100 ft deep. A nearby lake is 300 feet deep. Write the ratio of te fist lake's depth to the second lake's depth.
asked by Ray 
chemistry
A pH glass/calomel electrode was found to develop a potential of 0.0390 V when used with buffer of pH 5.52. With an unknown solution, the potential was 0.360 V. Calculate the pH of the unknown solution
asked by Nikki 
12th grade Biology
Most of the enzymes of the Calvin cycle also function in other metabolic pathways. This should not be a surprising finding, because ____.
asked by Anonymous 
us history
A great deal of america's success can be traced to the impacted of inventions. Show how several of these developments helped the country to grow.
asked by Tyana 
Financial and managerial accounting
1. Use the following data for questions 1 and 2.On March 12, 2005, Trio, Inc. acquired melting equipment for $37,000. The estimated life of the equipment is 7 years, with an estimated residual value of $9,000.Refer to above data. In its financial
asked by tom 
chemestry
true or false an atom can emit photons in the visible portion of the electromagnetic spectrum after absorbing photons in the ultraviolet?
asked by joly 
math
Which graph is more appropriate for displaying the number of individuals of differing ages at a picnic? A histogram, bar graph, or line graph? Why would it not be appropriate to use the ones not picked? I am confused... I thought it would be bar graph as
asked by m 
Chemisty
I have worked this over and over the answer is 37 g. but I am not coming up with that can anyone help? A flash containing 450 ml of 0.50 M H2SO4 Was knocked onto floor. How many grams of NaHCO3 do you need to put on the spill to neutralize the acid
asked by Larry 
AP Chemistry
A typical laser pointer is rated at 5.0 mW. It outputs red light with a wavelength of about 6300 Angstrom. How many photons of laser light will be emitted from the pointer if it is used 120 seconds.
asked by qwerty123 
Statistics
Quick Normal/InvNormal Calculator In a study of human mortality rate, an Actuary estimated that in US and Canada, about 78% (fictional figures) of life insurance claims resulted from accidental deaths. Suppose a study is being planned to estimate the
asked by Nina 
Algebra
This is question 2 about direct variation For this problem, tell whether each relationship is a direct variation. Explain. x  8  0  5  y  13  5  0 
asked by David 
e
what is dramatic irony?
asked by danny 
algebra
Juan charges $3.50 per hour for babysitting. From this, how would you figure out how long it takes him to make 15 dollars? HELP PLEASE
asked by Johnny 
Math. HELP!
A cylinder is to be made of circular crosssection with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the crosssection of the cylinder. Maybe it's the wording, but I
asked by Thomas 
Math
An underground tank full of water has the shape of a circular cone with a base radius 5m and height 4m at the top. The top of the tankl is 2m below the groundsurface and is connected to the surface by a spout. Find the work required to empty the tank by
asked by Breona 
us history
in its signed petition to the king, which rights did the rights did the tfirst continental congress claim colonists had?
asked by Anonymous 
social studies
Just a few more vaction days left. I sailed between Corscia and Sardinia to this Mediterranean port in the secondlargest country in Western Europe. I am about 75 miles south of the French borde, but I am not in France
asked by taquisha 
chemestry
How many moles of zinc acetate, Zn(CH3COO)2, are there in 163 mL of a 0.160 M solution?
asked by cristy 
chemestry
For the following reaction, 5.70 grams of hydrogen gas are mixed with excess nitrogen gas. The reaction yields 22.6 grams of ammonia. (1) What is the theoretical yield of ammonia ? ____ grams (2) What is the percent yield for this reaction ? ____ %
asked by cristy 
Chemistry
Why would Magnesium (Mg) be unable to combine with Chlorine (Cl) to make a compound?
asked by Kinzie 
geometry
find CD. ab=bd=2x +3 ac=4x+5 bc=3x+11 round to the nearest tenth
asked by Anonymous 
HEALTH INFORMATION SYSTEMS
What are some of the advantages and disadvantages in using PDAs to facilitate patient care?
asked by keisha 
Fine Art
What are three components of aesthetics? Thanks MC
asked by mysterychicken 
US History
Describe the concept of Popular Sovereignty as it was used in the years leading up to the civil war. Unsure about this question, don't know exactly what it's about.
asked by anthony 
Earth science
what are the causes of groundwater contamination? How can you stop the contamination?
asked by SHelly 
math
find the domain and all the critical points of the function. a) x(the square root of 94x^2) The domain is x must be less than or equal to positive or negative two but when i go to do the derivative to find the critical points i always get stuck. can
asked by Anonymous 
algebra
A dehydrated patient needs a 2.6% saline IV. Unfortunately, the hospital only has bags of 8% and 2% saline solutions. How many liters of each of these solutions should be mixed together to yield 2 liters of the desired concentration?
asked by June 
History
4. What does Paine,thomas say to the Tories who stand in the way of Independence? Why did he believe it necessary to address part of his essay to them?
asked by geraldine 
4th grade
Two rectangles have the same shape. The perimeter of the larger one is twice the perimeter of the smaller one.How many times as great is the larger rectangle's area?
asked by Kache'la 
CALC
Evaluate the integral: the integral of [5e^(2t)]/[1+4e^(2t)]dt. I used u sub and let u=e^2t and got 5/2arctan(e^2t)+C. But this answer is incorrect. Please help. Thanks
asked by Kristina 
math
Three rectangles have exactly the same area. The dimensions of each rectangle (as length and width) are a and b; a – 3 and b + 2; and a + 3 and b – 1. Find the area of the rectangles.
asked by james 
MATH GURU, PLEASE HELP
The company offers two types of sales: 1. Internet sales; 2. Store sales. The marketing research manager believes that the Internet sales are more than 10% higher than store sales. The null hypothesis would be: A. Pinternet–Pstore >.10 B.
asked by Donny 
English
As it happens, you're right and I'm wrong. Tell if compound, complex, simple, compoundcomplex complex
asked by Hayley 
vocab
what is a metaphor, and personification
asked by shaquana 
English
Can you help me proofread the following paragraph and find nine misspelled or misused words and write them correctly? Planting a vegetable garden is a popular American hobby. It’s not ready that difficult. A gardening magazine or book can help you get
asked by Liza 
A&p
Why is it called “negative” feedback if it so positively affects our wellbeing?
asked by Danielle 
law
if you were a leader in your community. what LAW would you write to help others?
asked by Anonymous 
Geography
i'm researching on Kyoto, Japan i need some help on a couple of questions Humans modify the environment Human depend on the environment please help and thank you
asked by Secret 
math
Three rectangles have exactly the same area. The dimensions of each rectangle (as length and width) are a and b; a – 3 and b + 2; and a + 3 and b – 1. Find the area of the rectangles.
asked by HELP 
English title help!
I need help thinking up a title for my paper!! My paper is about contrast between passionate, youthful love and mature, steady love it is about the book "O Pioneers!" by Willa Cather.. Cather implies that passionate love is dangerous and unstable and is
asked by samantha 
History
how does the infusion of african,european and indigenous cultures reflect itself in the americas?
asked by Doreen 
math
One fourth of a foot is how many inches?
asked by michelle 
Carnita
What is John G. Roberts background, before being nominated by President Bush? Why he chosen for the Court, and by whom
asked by Anonymous 
chemestry
Based upon the previous question, what is the THEORETICAL YIELD (in grams) of Mg3N2 if you start with 10.0 grams of each reactant? previous question:consider the magnesium nitride addition reaction again. This time, suppose you start with 10.0 g of each
asked by cristy 
Chemistry  Acid structure
I'm writing up a lab report for the an experiment in the separation and analysis of an unknown mixture (acid and neutral compound). The guideline I'm looking at states "You do need to include balanced reaction(s). Since you do not know the exact structure
asked by Anonymous 
hist from 1945
measure the impact of the watergate scandal on public perseption of the government power.
asked by cristee 
chemistry
A gaseous mixture contains 75 grams of N2 and 25 grams of Ar. What is the pressure due to Argon?
asked by matt 
Math
Consider the squaring function: The output is the input times itself. For example, if the input is 3, the output is 9. Determine which of the following points are on the graph of the squaring function: (6,36), (4,8), (2,4), (3,6), (5,25), (6,12),
asked by Michelle 
Math
2. Find the LCM and GCD of (2y^2  3a^2)x + (2a^2  3x^2)y and (2a^2 + 3x^2)y + (2y^2 + 3a^2)x 3.Find m if the polynomials (x^2  2mx + 2) and (3x^2  mx  4) have a common linear factor 4. The ramainder on dividing 121^n  25^n + 1900^n  ( 4)^n by 2000
asked by Sashaank 
HELP
How did the Indian reeducation movement affect young Native Americans?
asked by Justin 
history
what did the native american children gain and lost from assimilation policy.(from the indian reeducation movement)?
asked by ashely 
Chemistry
What is the balanced molecular equation and their physical state of each substance of silver(I) nitrate and 6 M hydrochloric acid?
asked by jay 
science
what are the differences between mechanical, chemical, and erosion weathering
asked by blahe 
Math
Jen and Heather went to lunch. When the bill came, Jen discovered she had only $6. Luckily, Heather had enough money to pay the other part, or 3/5 of the bill. How much did Heather pay and how much was the total bill? Please explain how you got these
asked by Joey 
college
Considering early childhood stuttering, children in the majority of cases is what?
asked by Tonya Gray 
Algebra
At what two points do the graphs of y=2x^25x12 and y=1/2x^23x+4 intersect? explain your reasoning.
asked by Frank 
physics
A child wants to throw a rock into a puddle which is 20m away and 20m down a hill. If he can throw the rock at ana ngle of 60, what velocity does he need to release the rock at?
asked by kristen 
US History
Describe a positive development for women that occurred during the New Deal. Can I have information on this?
asked by anthony 
math
absolute value of (3a + 2)2= 4a + 1
asked by dmj 
Environmental Science
We are using Chi Squares to understand if descrepancies in aniaml populations are random or significant. On the developed land, 20 traps were set. 7 Road runners were caught, and two were marked. On the Undeveloepd land, 20 traps were also set, but 11 Road
asked by Justine 
grammar
is islands,citizens,frogs,streets,citys,statues,nations, views , and museums a singular possessive noun or a plural possessive noun? if you know the answer please post the answer today thank you.
asked by blank 
Organic Chemistry
After extraction with bicarbonate,in which form is benzoic acid now in solution?
asked by Davia 
US History
What was the Johnson Administration's policy on civil rights? I need examples.
asked by anthony 
Math
my numerator is 6 less than my denominator. I am equivalent to 3/4.
asked by Debbie 
US History
Describe the greatest foreign policy victory for the Carter Administration. I need examples.
asked by anthony 
calculus
f(x,y)=x^2+2y^2 use the gradient vector Þf(5, 1) to find the tangent line to the level curve f(x, y) = 27 at the point (5, 1). answer choices: 1. 10x + 4y = 27 2. 2x + 4y = 27 3. 5x + 2y = 27 4. 10x − 4y = 27 5. 5x − 2y = 27
asked by Bob 
Media Studies
Hi there, I need to make a response to this quote, could anyone give me ideas of what this quote might mean in relation to media today. "The Internet is to News, What Car Horns are to Music" Thanks.
asked by Darren 
eng
i need to know if i underlined the correct topic sentence. if not can you see the topic with in the two paragraphs? 1. When purchasing a car, it can cost more than what it is worth because of not developing the money to buy it. Financing a car to purchase
asked by erica 
English
I really need you to check these sentences for me. I tried to rephrase the beginning of chapter five of Shelley's Frankenstein. 1) The scene takes place during a dreary night. It is one in the morning and the rain taps dismally (I need a synonym) against
asked by Franco 
math
The lcm of two #s is 60. one of the #s is 20. other # is even & has only two prime factors. what is the other number?
asked by bell 
Chemistry
How do you balance: iron(II0 oxide+ oxygen> iron(III) oxide
asked by Amanda 
math
the total cost of hiring a certain plumber is a flat rate of $35 plus $9.50/hr. 6. Write an equation that shows the relationship between the quantities.
asked by Anonymous 
chemestry
Consider once again the magnesium nitride addition reaction from the previous question. This time, suppose you start with 10.0 g N2 and an unlimited supply of Mg. What is the maximum number of MOLES of Mg3N2 that could be produced in this case?
asked by cristy 
geography
how long did it take to clear up the bp oil spill? i have searched google and cannot find any relevant answers x thank you x
asked by anonymous 
british literature
What is Gerald Manley Hopkins praising? Explain why.
asked by jlew 
GEOMETRY
Line JK is the median of triangle GIJ.If GK=10x4,IK=5x+6, find the measure of live IG
asked by Anonymous 
Math
Three rectangles have exactly the same area. The dimensions of each rectangle (as length and width) are a and b; a – 3 and b + 2; and a + 3 and b – 1. Find the area of the rectangles.
asked by HELP PLEASE 
Physics
The motion of material particles in Pwaves is A. Clockwise circles as seen from the side B. Counterclockwise circles as seen from the side C. Parallel to the propagation direction D. Perpendicular to the propagation direction
asked by Bethany 
PLEASE HELP/LINEAR EQUATION
Is 7y+2x = 11 a linear equation why?
asked by AMY 
algebra 1
Can someone please help me with this inequality problem 38>(4x+8)8 I have no idea how to solve this problem but I would like to learn. Can you be kind to show me the steps so that I can use this as an example problem for other problems. Thanks!
asked by thawk 
chemistry
A decade or two ago, the exhaust coming from many smoke stacks of factories and power plants looked brown (and ugly), because it contained NO gas. One way of removing NO is the addition of CO to the exhaust. Identify oxidizing and reducing agent. Write a
asked by Anonymous 
8th grade
find the nth term A1=6, d3, n=10
asked by Caroline 
english
make sentence of fencepost
asked by Anonymous 
geography
Does the United States currently have a normal economy? A normal economy is when everyday people can make reasonable accurate predictions about the economic future. These people want to be able to plan and protect themselves. These are the 4 indicators of
asked by Mia 
Algebra II
I need to rewrite this with rational exponents. (√3mn)^9 I have no clue of what I need to do. Can someone please take me step by step?
asked by Daniel 
algebra
it says find the roots of each equation by factoring x^2+8x=16
asked by paul 
Math
Are (1/2 x 3) x 8 and 3 x (1/2 x 8) equal? Explain how this can help in finding the area of a triangle
asked by Zach 
Math
3x^2 * 4x * 2x^3= ?
asked by Anonoyms 
Sexually Transmitted Infections
What are the temporary and longterm effects of STI's? chlamydia conorrhea trichomonas LGV Pubic Lice and Scabies syphilis HPV Herpes Hepatitis B HIV Is that all? I have gathered the information, but how do I answer the question?
asked by Anonymous 
US history
I need to write an essay on this topic: Describe a major result of the Civil War on the US and assess whether the result was good or bad for the country. Do you have any suggestions on what I can write on? Also, could you give me some sources.
asked by ciara 
5th grade (thomas)
6  m = 2 and 3/10
asked by Jill 
Math
Are (1/2 x 3) x 8 and 3 x (1/2 x 8) equal? Explain how this can help in finding the area of a triangle
asked by Please help 
English
I have a presentation on the graphic version of Kidnapped by Robert Louis Stevenson, and its adapted By Alan Grant and Illustrated by Cam Kennedy. I need to compare it to the original and write background information about it. Can you please provide me
asked by Jon 
A&P
When is RNA found within the nucleus of a cell?
asked by Danielle 
Geography
What influence did western europe's geography have on WWI
asked by Brenda 
Fractions
There are two different ways to write a fraction in simplest form.
asked by Amberlee 
Geography
We have to define the stages of economic growth and place one Latin America country under each stage. One of the stages is capital intensive. Wealth is created through the efficient use of money. Industrailziation manufacturing occurs. Investment/loans to
asked by Mia 
english
what does metaphor personification, mean?
asked by shaquana 
geography
bp oil spill  how long did it take to clear it up?, and can i have a real life story about it x oh and some history facts and figures please x thank you so so much x
asked by anonymous 
advanced math 6th grade
how many positive integral factors does the number 36 have? I don't understand what that means or how to find the answer.
asked by marcus 
british literature
Analyze the characterization of Sherlock Holmes. A:How do we learn about him? B: What do we learn about him?
asked by jlew 
geography
how many rig workers survived the bp oil spill explosion?
asked by anonymous 
math
Finding the area or a triangle A=1/2bh A= 1/2 x 13.6 x 7
asked by Zach 
Math
how to solve 2(6a+7)=38
asked by wil 
English
I need to know if the following sentences are possible. Thank you very much! 1) Lake Titaca is situated (lies) between Bolivia and Peru and is the highest large lake in the world. Can I replace "highest large" with "largest"? What is the difference?
asked by Franco 
math
(x/2)+(x/4)+(x/8)=(x(1/2)) variable domain {(5/7),(6/7),(4/8),(3/7),(2/7)
asked by kumar 
world geography
what is the diffrence between a cooperative community,called a moshav,and a collective community,called a kibbutz?
asked by alea 
math
my daughter is working on calculating how many triangles point up in equilateral triangle. This is her bonus question: solve this problem for an equilateral triangle with sides measuring n units each. I'm lost, help.
asked by adrianna 
MATH
HOW TO SOLVE 2SIN+1
asked by GLORIA 
music
what are some of the occasions where you would sing. Like "happy birthday". i can't think of anything, so could you please just toss in some ideas. Can be spiritual/cultural. Anything really.
asked by sally 
math
How does (1/2 x 3) x 8 and 3 x (1/2 x 8) being equal help in finding the area of a triangle?
asked by Zach 
Science
Why would E. coli not produce acid during the fermentation of glucose?
asked by Anonymous 
English
Can you check these sentences for me, please? Thank you. 1) The girl in the right margin of the text is wearing a light blue plaited miniskirt over a pair of grey leggings. She is also wearing a pink sleeveless top over a purple vest and pink trainers.The
asked by Franco 
Fine Art
What style did Vincent can Gogh use, and if and why opinions regarding his contribution to the art world have changed over time. Thanks MC
asked by mysterychicken 
Science
My teacher has asked our class to each do a 2 minute light and sound show using four different concepts... Any ideas?
asked by C 
Math
Factor 24 into primes.
asked by Sophia 
MATH
5a16a=30+9a+7
asked by PLEASE HELP 
physic
how do you find the acceleration for kinetic friction?
asked by elizabeth 
math
How do I find the area of a triangle?
asked by Zach 
physiscs
A man runs with a speed of 6 m/s off a platform that is 10m above the water. How fast is he moving when he heats the water
asked by Jay 
social sgtudies
Can anyone tell me what happened when Prince Shotoku of Japan died?
asked by hunter 
8th grade
can u simpilify 24 radical 152?
asked by naomi 
math 2
in what simple interest rate will 7200 triple itself if invested for 10 yrs.
asked by jonel 
algebra
x cubed  7x squared 7x +20
asked by Anonymous 
math
y=5x+2 make a table
asked by john 
Science
What do noble gases have in common?
asked by Kate 
Mrs Sue
Do you know what happened when Prince Shotoku died in Japan?
asked by hunter 
social studies
what does poverty mean?
asked by miranda 
math complex numbers
3 + 3i + 8 − 2i − 7
asked by dmj 
5th grade
6m=2 3/10 would that be m=3 7/10 thank you.
asked by Jill 
geography
We have to define the stages of economic growth and place one Latin America country under each stage. One of the stages is capital intensive. Wealth is created through the efficient use of moneyy. Industrailziation manufacturing occurs. Investment/loans to
asked by Mia 
math
which is greater half pennies or 0.05 how do you know
asked by maria 
school of social science
what is quantitative research?
asked by ramadhani 
English
I forgot to include the following sentences. I really hope you can have a look at them, too. 1)Now the reality with which he is confronted fills him with horror and disgust. 2) He is disgusted and horrified by his creation He rushes from the room and
asked by Franco 
operating systems
what are some examples of a computer system in an unsafe state and describe how the process could be complete without causing a deadlock.
asked by katherine 
social studies
what group of people were the first workers in factories
asked by hayla 
5th grade
what number is 3/8 of 6?
asked by Jill 
Math
A= 1 m x 50 cm
asked by Anonymous 
english
whats the plot sturcture?
asked by danny 
math
63 7/10 =
asked by Heather 
Computer science
what are some examples of a computer system in an unsafe state and describe how the process could be complete without causing a deadlock.
asked by tasha