Questions Asked on
November 29, 2012

trig
A tree on a hillside casts a shadow c ft down the hill. If the angle of inclination of the hillside is b to the horizontal and the angle of elevation of the sun is a, find the height of the tree. Assume a = 48°, b = 18° c = 235 ft. (Round your answer to
asked by Anonymous 
Chemistry
At T = 25 degrees Celsius, the reaction No2 2NO +O2 has an equilibrium constant K=5.0*10^13. Suppose the container is filled with NO2 at an initial pressure of 0.25 atm. Calculate the partial pressure of NO at equilibrium
asked by Paul 
chemstry
calculate the amount of energy required to convert 55.0g of ice at 10.0°c into steam at 125°c?
asked by celeste 
Math
Which fractions are equivalent to 25/45 ?
asked by Bell 
trigonometry
The sprockets and chain of a bicycle are shown in the figure. The pedal sprocket has a radius of 4 in., the wheel sprocket a radius of 2 in., and the wheel a radius of 13 in. The cyclist pedals at 45 rpm. (a) Find the angular speed of the wheel sprocket.
asked by monic 
PreCalculus
Suppose that a polynomial function of degree 5 with rational coefficients has the given numbers as zeros. Find the other zero( s): 1, radical 3, 11/3
asked by Brittany Penman 
physics
A block initially at rest is allowed to slide down a frictionless ramp and attains a speed v at the bottom. To achieve a speed 3.9 v at the bottom, how many times as high h2 h1 must a new ramp be?
asked by Anonymous 
trig
A plane has an airspeed of 200 miles per hour and a heading of 28.0°. The ground speed of the plane is 207 miles per hour, and its true course is in the direction of 38.0°. Find the speed and direction of the air currents, assuming they are constants.
asked by bryan 
chemistry
Mg + Au+ > Mg2+ + Au what is the oxidation and reduction half reactions
asked by jalisa 
Math
Compare the pair of numbers. Use . 3/4[_]33/40
asked by Bell 
Physics
a net force of 3.50 N acts on a 2.75 kg object. what is the acceleration of the object?
asked by Janet 
survey of math
A license plate is to consist of 2 letters followed by 3 digits. Determine the number of different license plates possible if repetition of letters and numbers is not permitted?
asked by anjanette 
AP Physics B
A 63.6kg bungee jumper is standing on a tall platform (h0 = 50.6 m). The bungee cord has an unstrained length of L0 = 9.54 m and, when stretched, behaves like an ideal spring with a spring constant of k = 67.8 N/m. The jumper falls from rest, and it is
asked by Alexis 
Physics
A student stands at the edge of a cliﬀ and throws a stone horizontally over the edge with a speed of 10.6 m/s. The cliﬀ is 25 m above a ﬂat, horizontal beach. A.) How long after being released does the stone strike the beach below the cliﬀ? The
asked by Big Poppa Smurf 
math
1) Write the fraction 5/9 as a percent.Round to the nearest hundredth of a percent where necessary. 2)Write the decimal 0.079 as a percent. 3)In the country of Sweden, a bill becomes a law only if 38/50 of the senators approve it. What percentage 50 is
asked by luz, please answer =) 
Geometry
a triangle has sides of lengths 12, 14, and 19 is it a Right Triangle? Explain
asked by Anonymous 
math
A fish tank is 50 cm long, 34 cm wide and 24 cm high. It contains water to depth of 18 cm. Four identical spheres are placed in the tank and are fully submerged. The water level rises by 4.5 cm. 1.What is the volume before the spheres were added? 2. What
asked by Lindsay 
math
Natalie bought 1 1/4lb. of candy at $4.20 per pound.How much did Natalie pay for the candy? Is the answer $5.70?
asked by Math Geek 
math
Find the values of the trigonometric functions of t if tan t= 3 and the terminal point of t is in quadrant III.
asked by amaa 
PHYSICS PLEASE HELP ME
A particle with an initial linear momentum of 3.44 kg · m/s directed along the positive xaxis collides with a second particle, which has an initial linear momentum of 6.88 kg · m/s, directed along the positive yaxis. The final momentum of the first
asked by Anthony 
Calculus
*Optimization problem* I'm okay at some optimization problems, but this one has me stumped. You work for a company that manufactures circular cylindrical steel drums that can be used to transport various petroleum products. Your assignment is to determine
asked by Zared 
Math
An “A” train leaves a subway station every 12 minutes. An “E” train leaves every 9 minutes. If both trains just left the station on parallel tracks, when will both leave the station together again?
asked by Bell 
physics
A liquid of density 1354 kg/m^3 ﬂows with speed 2.45 m/s into a pipe of diameter 0.29 m. The diameter of the pipe decreases to 0.05 m at its exit end. The exit end of the pipe is 7.82 m lower than the entrance of the pipe, and the pressure at the exit of
asked by michelle 
Algebra2
Graph the given function using the given values of x. 1. f(x) = 5 ; x = 3, 2, 1, 0, 1, 2, 3 2. g(x) = x^3 + 2 ; x = 2, 1, 0, 1, 2
asked by Sara 
Math
what is the equation for the perpendicular bisector of the line segment whose endpoints are (7,2) (1,6)
asked by Will 
math
72 is what percent of 480? Write and solve an equation to solve the problem
asked by alex 
math
5. Find the length of the hypotenuse of a right triangle with legs of 20 cm and 21 cm. 41 cm 841 cm 6 cm 29 cm 6. The length of the hypotenuse of a right triangle is 15 cm. The length of one leg is 9 cm. Find the length of the other leg. 6 cm 12 cm 17 cm
asked by hi, help hard questions 
Math
Write 3 1/3 as an improper fraction.
asked by Bell 
physics
A missile of mass 1.10 102 kg is fired from a plane of mass 5.50 103 kg initially moving at a speed of 3.15 102 m/s. If the speed of the missile relative to the plane is 1.06 103 m/s, what is the final velocity of the plane?
asked by Anthony 
physics
a 2m long string of mass 10g is clamped at boths ends.the tension in the string is 150N.the string is plucked so that it oscillate.what is the wavelength and frequency of the resulting wave it is produce a standing wave with two antinodes?
asked by IE 
Spanish III Part 2
Write the correct conjugation of the verb in the preterite tense. 1. abrir  yo 2. escribir  nosotros 3. hablar  tú 4. escuchar  vosotros 5. cantar  ella 6. bailar  ellos 7. contestar  yo 8. limpiar  nosotros 9. correr  tú 10. montar  vosotros
asked by Cora 
Chemistry
Hi everyone, I have been trying to figure out this titration equation all day and for some reason I am stumped. Here is the question in full: Potassium hydrogen phthalate, KHP, can be obtained in high purity and is used to determine the concentrations of
asked by jo 
science
Which example below provides a complete scientific description of an object in motion? A. The marble changed position quickly. B. The car traveled north. C. The marble moved 30 cm north in 6 seconds. D. The ball rolled 20 cm in 5 seconds.
asked by bema 
Science
The ripples in a certain groove 12.7 cm from the center of a 33rpm phonograph record have a wavelength of 1.75 mm. What will be the frequency of the sound emitted?
asked by Jasmine 
math
a crate contains apples, pears, and oranges.There are 184 apples and pears and 248 apples and oranges. there are 3 times as many oranges as pears. how many apples are in the crate? How do I show my work to solve this problem using Singapore math  Math in
asked by Braden 
Physics
A paintball is fired from a gun horizontally with a speed of 110 m/s. If it hits a point 14 cm below the target: A) What is the total time the paintball is in the air? B) How far is the target from the paintball?
asked by Stefanie 
earth
i have an acrostic poem i have to do for school on describing warm and cold fronts, but i can't think of some of the words
asked by person 
Chemistry
Consider an ionic compound, MX2, composed of generic metal M and generic halogen X. The enthalphy of formation of MX2= 891. The enthalphy of sublimation of M= 141. The first and second ionization energies of M are 605 and 1392. The electron affinity of X=
asked by Garcia 
Chemistry
H6P6: Urbium Oxide First Part of the Question: Urbium (Ur) is an upscale element found in big cities. Its oxide (UrO2) is not very stable and decomposes readily at temperatures exceeding 66∘ C. The figure below shows how the rate of reaction varies with
asked by Odesa 
Please help with 5 math questions
1. 7r – 7 = 2r + 18 r = –5 r = 5 r = 2.2 r = 1.2 2. 2x + 12 = 18 – x x = 3 x = 10 x = 6 x = 2 3. 8x – 3 = 15x + 18 x = –3 x = 3 x = 2.1 x = .9 4. 6y – 6 = 4y + 16 y = 2.2 y = –2.2 y = 11 y = 5 5. 3(x – 4) = 5(x + 2) x = 11 x = –11 x = 1 x
asked by Anonymous 
Math
A high school volleyball team has 20 members. If there is an equal number of members from each of the 4 grades, how many students from each grade are on the team?
asked by Joe 
math
you deposit $2200 in an account that pays 3% interest, after 15 years you withdraw, what is the balance if the interest is compounded continuously
asked by Michelle 
chemistry
Normal glucose levels in the blood are from 70 to 110 mg glucose per 100 mL of blood. I the level falls too low, there can be brain damage. If a person has a glucose level of 108 mg/100 mL, what is the total mass of glucose in grams in 5.10L of blood?
asked by lisa 
college physics
A hydraulic brake system is shown. The area of the piston in the master cylinder is 6.32 cm^2, and the area of the piston in the brake cylinder is 1.83 cm^2. The coeﬃcient of kinetic friction between the brake shoe and the wheel drum is 0.443. How large
asked by michelle 
Physics
A 12.8 gram bullet embeds itself in a 2.370 kg block on a horizontal frictionless surface which subsequently collides with a spring of stiffness 487 N/m. The maximum compression of the spring is 11.0 centimetres. a) What was the initial speed of the bullet
asked by Jalopy 
Geometry
Triangle ABC is a Right Triangle If AB=3 and AC=7 find BC. Leave your Answer in Simplest Radical Form.
asked by Anonymous 
Algebra2
Are these Correct? Write an equation for the line in point/slope form and slope/intercept form that has the given condition. 1. Passes through (3, 2) and is parallel to 2xy=4 = 4x+y 2. Passes through (1, 1) and is perpendicular to y = 5/2x + 3 =6\7x2
asked by Victoria 
painting
An artist makes a painting that is 12 feet by 9 feet. He paints a frame around the painting. The frame is 4 inches wide. What is the perimeter of the outside edge of the frame?
asked by zion 
Physics
In an interference of light experiment, coherent light that contains two wavelengths: 640 nm (redorange) and 425 nm (indigoblue), passes through two narrow slits separated by 5.35 Î¼m, and the interference pattern is observed on an observation screen
asked by Alphonse 
chemistry
A gas is collected over water at 20 degrees Celsius at a pressure of 752 mm. What is the pressure of the pure gas?
asked by Jill 
Linear equation
Graph each equation by making a table. Y = 4
asked by Ashley 
Math
10x and 45x to the power of 4
asked by D 
math please help imedietely
The icecream cone wrapper is having the flat side on the top and the point at the bottom. Draw the shape of this icecream cone wrapper when it is slit from the edge to the center point and flattend out. Please tell answer and explain
asked by Anonymous 
Math
Which of these statements about Atlantas temperature data from January to may is true? A. It is always higher than 40 degrees Fahrenheit B. it is always lower than 60 degrees Fahrenheit C. It is hotter in march than in April D. It is cooler in February
asked by Shion 
algebra
Determine the principal that must be invested at 7% compounded monthly, so that $500,000 will be available for retirement in 49 years. Answer in units of dollars
asked by nicole 
chemistry
Cisplatin, a drug used in the treatment of certain types of cancer has the molecular formula Pt(NH3)2Cl2. How many moles of compound are in 254.09 grams of the compound?
asked by Mary 
biology
why would a One serving of particular food that contains 16 g of carbohydrates, 2 g of proteins, and 10 g of fats hav 300 calories?
asked by Samantha 
Algebra2
Write the standard form of the equation of the circle with the given center and radius. 1. center (2, 0) and r = 3
asked by Pablo 
Chemistry
The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 4.091×10−3 M−1s−1. What is the initial rate of reaction in a reactor
asked by Odesa 
Chemistry
Administratium bromide (AdBr) decomposes readily at temperatures exceeding 37°C. The figure below shows how the rate of reaction varies with the concentration of AdBr. The rate, r, is in units of M s1 and the concentration of AdBr, c, is in units of M
asked by Odesa 
Math
what is the equation for the perpendicular bisector of the line segment whose endpoints are (7,2) (1,6)
asked by Will 
chemistry
The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 6.091×10−3 M−1s−1. What is the initial rate of reaction in a reactor
asked by NIK 
math
A tree on a hillside casts a shadow 200 ft down the hill. If the angle of inclination of the hillside is 23 to the horizontal and the angle of elevation of the sun is 54, find the height of the tree. Please round the answer to the nearest integer.
asked by amaa 
Chemistry
What's the linear density of body center cubic (0,1,1)of Molybdenum
asked by John 
SAT Essay
Please critique and let me know how it is and what I can improve. Thank you! Assignment: Do you think that ease does not challenge us and that we need adversity to help us discover who we are? Plan and write an essay in which you develop your point of view
asked by Sanya 
physics
A skater of mass 85.5 kg initially moves in a straight line at a speed of 4.70 m/s. The skater approaches a child of mass 36.5 kg, whom he lifts on his shoulders. Assuming there are no external horizontal forces, what is the skater's final velocity?
asked by Anthony 
Math
David wanted to solve 3(x7)=5. As a first step, he wrote 3x21=15. What error did he make? Correct his error and then find the solution?
asked by Patchie 
math
Jessica bought a computer for $325 and had to pay 6% sales tax. What was the total cost of Jessica’s computer?
asked by alex 
physics
A basketball of mass 0.602 kg is passed to a player of mass 83.0 kg who jumps off the floor while catching the ball. The player's center of mass is instantaneously at rest just before he catches the ball, which is initially moving at a velocity of 11.5
asked by Anthony 
english
What are the themes in the short story Clothes by Chitra Divakaruni?
asked by Aaa 
History
Ms. Sue. Do you have the answers for English 3 and 4 for Ashworth High School? I have completed all the other classes by myself. But if I don't finish English 3 and 4 by next week, I'll have to repay my tuition. Please help me!
asked by Bob 
Physics
When you blow on a spoonful of soup to cool it, this is an example of: Natural convection Forced convection Conduction
asked by StressedStudent 
math
Estimate a 15% tip on a taxi ride that costs $23.25.
asked by alex 
PHYSICS DUE SOON
In each cycle of its operation, a heat engine expels 6,100 J of energy and performs 1,300 J of mechanical work. (a) How much thermal energy must be added to the engine in each cycle?_____J (b) Find the thermal efficiency of the engine.____%
asked by Ame 
Physics, Please Help
A 2130kg space station orbits Earth at an altitude of 455 km. Find the magnitude of the force with which the space station attracts Earth. The mass and mean radius of Earth are 5.98 × 1024 kg and 6370 km, respectively.
asked by Mike 
Physics
What is the difference between converging and diverging waves? What happens to a converging wave after it has converged?
asked by Raju 
Astronomy Grade 9
What hazards do humans face when they are in space and what technologies have been developed in response to these hazards?
asked by Curly Sue 
Chemistry
Astronomers have detected hydrogen atoms in interstellar space in the n=732 energy level. Suppose an atom in this excited state emits of a photon and undergoes a transition from n=732 to n=632. How much energy does the atom lose as a result of this
asked by Carice 
Math (Calculus)
A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.3 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 10 cm. Can someone help & explain how to solve this question? Please.
asked by Alex 
Algebra
Each team in a soccer leaguehas played every other team 5 times. Current league standings are: Team A 37 Points Team B 34 Points Team C 28 Points Team D 26 Points Team E 20 Points If a team receives 3 points for a win, 1 point for a tie, and 0 points for a
asked by Jake 
Physics
A kickoff sends a football with an initial velocity of 25 m/s at an angle of 50 degrees above the horizontal. a) find the x and y components of the velocity b) find the time the ball is in the air c) find the horizontal distance the ball travels before
asked by Annie 
Physics
A boy is standing on a skateboard holding two 5.0 kg bowling balls. Initially they are moving to the left at a speed of 3.0 m/s. At one point the boy throws one ball to the right at 4.0 m/s causing his speed to increase. Before he can slow down, he throws
asked by Jordan 
chemistry
What is the acid dissociation constant for a 0.010 M solution of the unkown acid HX that has a pH of 2.70 at equilibrium? I know the answer but not how to get it, please help? Thanks in advance.
asked by ciaociao 
Physics
A 0.54 kg rock is projected from the edge of the top of a building with an initial velocity of 13.8 m/s at an angle 59◦ above the horizontal.Due to gravity, the rock strikes the ground at a horizontal distance of 20.3 m from the base of the building.How
asked by Big Poppa Smurf 
Physics
A projectile is ﬁred straight upward at 167 m/s. How fast is it moving at the instant it reaches the top of its trajectory? Answer in units of m/s How fast is it moving at the instant it reaches the top of its trajectory if the projectile is ﬁred
asked by Big Poppa Smurf 
Physics
Suppose a meteor of mass 3.30 1013 kg is moving at 32.0 km/s relative to the center of the Earth and strikes the Earth. Suppose the meteor creates the maximum possible decrease in the angular speed of the Earth by moving toward the west and striking a
asked by Avery 
chemistry
The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 2.591×10−3 M−1s−1. What is the initial rate of reaction in a reactor
asked by mike 
chemistry
The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 6.091×10−3 M−1s−1. What is the initial rate of reaction in a reactor
asked by sveta 
chemistry
N2O5 dissolved in CCl4 decomposes to give N2O4 and O2. The reaction is first order with a halflife of 1234 seconds. How long will it take, in seconds, for the concentration of N2O5 to fall to 1.1% of its initial value?
asked by sveta 
chemistry
Administratium bromide (AdBr) decomposes readily at temperatures exceeding 37°C. The figure below shows how the rate of reaction varies with the concentration of AdBr. The rate, r, is in units of M s1 and the concentration of AdBr, c, is in units of M
asked by sveta 
CHEMISTRY
Urbium (Ur) is an upscale element found in big cities. Its oxide (UrO2) is not very stable and decomposes readily at temperatures exceeding 66∘ C. The figure below shows how the rate of reaction varies with the concentration of UrO2 at 75∘ C. The rate
asked by OLEG 
math
samantha planted 42 rows of corn . if she gets 105 ears of corn from each row at the end of the summer what is the ratio of ears of rows? express in simplies form
asked by lilly and antionette 
Math
Match the expression: Subtract 41 from 24 raised to the 6th power; then multiply by 2.
asked by Kai 
number sense
I am greater than 4 tens and less than 5 tens. I have 9 Inés. What nombre I am?
asked by nelson 
chem
Water is the solvent and you can assume the density of water is 1.0g/cc. a.) What will be the amount of solute in grams if the volume is 500 mL and the concentration of solution is 15% w/w? The molar mass of the solute is H2SO4, 98.0g/mol b.) What is the
asked by Angel Locsin 
Math
John took a sample of water from pond behind house. On first day, he found 1 bacteria in the sample. Each day it tripled. Show growth chart.
asked by Ryan 
Physics
12 volts is applied across a 4 ohm resistor. How much power is dissipated by the resistor?
asked by Hans 
Physics
What is the force on two point charges of 106 C that are 20 cm apart?
asked by Johnny 
Algebra2
Give the domain of the function. 1. g(x)= 5/ x^2 25 = all real numbers 2.f(t)= 3t^2+5t+2 = Negative 3. h(x)= squareRoot of ; 5x2 = All real numbers
asked by Nessa 
Physics
A 100 m long wire with a crosssectional area of 4 mm2 has a resistance of 6 ohms. What is the resistivity of the material of the wire in Ùm?
asked by Karl 
Algebra
Two joggers are running around an oval track in opposite directions. One jogger runs around the track in 56 seconds. They meet every 24 seconds. How many seconds does it take the second jogger to run around the track?
asked by Britney 
Advanced Math
Find the real solutions by factoring. 3x^3+16=x^2+48x
asked by Kristina 
social studies
how to write a song about american culture
asked by gina 
chemistry
how may grams are in 6.1 moles of AIN
asked by Anonymous 
Adult Development and life Assessment
Lydia behaves appropriately only because she is aware of rewards and punishments. Which level of moral reasoning do her behaviors reflect 1. preconventinal morality 2. conventinal morality 3. unconventinhal morality 4. postconventinal moralty Please help
asked by Regina 
science
Help fast please!!!!!!!!!!!!!!! Which of these is the best example of translational motion? A. a coin spinning on a desk B. a leaf blowing across the field C. a car in a parking lot with its engine running D. a ballerina standing on one foot
asked by miya 
physics
An object of mass 3.06 kg is released from rest and drops 1.75 m to the floor. The collision is completely inelastic. How much kinetic energy is lost during the collision?
asked by Anthony 
Algebra2
Check? Give the slope and yintercept of the given line. 1. 2x3y=6 = 3y = 2x6 y = 2/3 x  2 2. y=2x = 2/1x + 1 3. y=3 = y=3/1x + 3 3y = 2x6 y = 2/3 x  2
asked by Sara 
physics
A 0.26 kg rock is thrown vertically upward from the top of a cliff that is 32 m high. When it hits the ground at the base of the cliff the rock has a speed of 28 m/s. (a) Assuming that air resistance can be ignored, find the initial speed of the rock. (b)
asked by jorge 
calculus
Find a function f such that the curve y = f(x) satisfies y'' = 12x, passes through the point (0,1), and has a horizontal tangent there. I can use the antiderivatives to get y = 2x^3 + Cx + D but I don't know how to get C even though I know D = 1.
asked by asdf 
Spanish III
Help me not fail my Spanish III class? Write the 'yo' form preterite of the following verbs. 1. comenzar 2. practicar 3. jugar 4. almorzar 5. tocar 6. buscar 7. llegar 8. pagar 9. cruzar 10. empezar Fill in the blank with the correct form of the verb in
asked by Cora 
5th grade
how do you divide 1/4 by 1/2? please tell answer and explain
asked by Anonymous 
english
Marion claims her duty is to (1 point) a.Helen b.the children c.Lincoln d.France
asked by LaShondra 
Physics
A baking dish is removed from a hot oven and placed on a cooling rack. As the dish cools down to 33° C from 181° C, its net radiant power decreases to 13.3 W. What was the net radiant power of the baking dish when it was first removed from the oven?
asked by Sam 
P Chem
5. The Li atom has three electrons. Measured values of the first and second ionization potentials are 5.3917 eV and 75.6400 eV, respectively. (i) Calculate the exactly correct value of the third ionization potential. Hint: What kind of species is Li+2?
asked by Rebecca 
English
Read each sentence Rewrite it correctly using semicolons in place of commas to avoid confusion The assignment is Chapter 20, pages 420425, all of Chapter 21, and Chapter 22, pages 506515 The assignment is Chapter 20, pages 420425; all of Chapter 2, and
asked by Jerald 
science
HELP FAST!!!!!!!!!!!!!!!! If you see that a hotair balloon is rising above the top of a hill, what is the top of the hill called? A. delta point B. distance system C. coordinate system D. reference point
asked by LILY 
statistics
Suppose 100 randomly selected customers were asked to rate a particular service they recently had on a scale of 0 to 10. The sample mean rating was found to be 7.3. (Assume the population standard deviation of all ratings in the population of customers is
asked by Amy 
Math
What is the better deal? Earning $1000 a day for the rest of your life or earning $.01 the first day and doubling it every day for the rest of yor life. How do you know?
asked by Krista 
statistics
Suppose 100 randomly selected customers were asked to rate a particular service they recently had on a scale of 0 to 10. The sample mean rating was found to be 7.3. (Assume the population standard deviation of all ratings in the population of customers is
asked by Amy 
chemistry
what mass of aluminum hydroxide needs to be consumed to neutralize 1.25L of stomach acid (HCl). Stomach acid has a pH of 2.2
asked by kenny 
Math
Write the fraction in simplest form. 10/22
asked by Bell 
Math
A truck’s engine needs 3one over four gallons of oil for an oil change. How many quarts of oil are needed? (Hint: 1 quart = one over four gallon)
asked by Bell 
physics
Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.104 kg, initially moves to the right at a speed of 4.70 m/s, while the second block, of mass 0.208 kg, is initially to the left of the first block and moving to
asked by Anthony 
Math
Use prime factorization to find the LCM of 30 and 40.
asked by Bell 
new mexico
Kara drew a horizontal dashed line through the middle of a trapezoid parallel to the parallel sides.Did she create a line of symmetry?
asked by jacob 
Math
Order the numbers from least to greatest. 3/8, 19/24, 2/3.
asked by Bell 
Math
Harry rides his bike 25 3/8 miles. Karen rides her bike 25 2/5 miles. Who rides farther?
asked by Bell 
Science
I need help with 2 questions please. 1.What are the three parts of the law of conservation of mass/matter? Do not need the definition but the 3 laws please. Wikipedia and other sites just gives me the definition of the law of conversation. 2. How are
asked by Please Please Help 
English
1. They are talking about what they want to be in the future. 2. They are talking about their future job. (Are bothe the same in meaning? Do we have to use 'job' or 'jobs'?)
asked by rfvv 
Math
Match the expression: subtract 41 from 24 raised to the 6th power; then multiply by 2. Is it A. (24^641) x 2 Or B. 24^641 x 2 Or C. (2441)^6 x 2
asked by Kai 
Algebra2
Check? Give the slope and yintercept of the given line. 1. 2x3y=6 = 3y = 2x6 y = 2/3 x  2 2. y=2x = 2/1x + 1 3. y=3 = y=3/1x + 3 3y = 2x6 y = 2/3 x  2
asked by Sara 
QBASIC, Computers
The following is a list of salaries of the six employees in a certain company: Name Salary T. Angel $43,000 F. Smith $31,000 K. Johnston $22,000 P. Miner $18,000 C. Altman $27,000 A. Lu $19,000 Read a single dimension array for name and another array for
asked by Jason 
LA/SS
Why did George Wallace want to become president? and What did he do after 1987?? Please help. Thank you.
asked by Suzie 
Physical science
A solution that contains a small amount
asked by Ties a 
Adult Development and life Assessment
Lydia behaves appropriately Postconventional morality
asked by Regina 
Mba
1 three ways that companies use to destroy their data before destroying their computers . 2three programs that permanently destroy data on a hard disk. 3 Best methods or program for destroying data so nobody can recover it . Thanks.
asked by hanaa 
mba
1 lessons that are learned from Enron company failure .
asked by hanaa 
homework
How to do roll a dot die
asked by joselyn 
math
Lyle got paid to today. He used 1/2 of his check to pay bills. He spent 30% of what was left on new clothes, and going out to eat. while he was out, he gave $20 to a salvation army charity santa on the street corner. He put 3/4 of what was left into
asked by nicole 
7th grade social studies
What are the pros and cons to democracy? Thank you.
asked by Donnie 
7th grade science
How are cancer cells different from normal, healthy cells? How many different types of cancers are there and what causes them? What is the history of cancer? When was it first identified? What were the first treatments? What types of doctors work with
asked by Delilah 
English Colons
Read the items If an item is correct write C otherwise rewrite it using a colon We bought apples,milk, and bread We bought: apples,milk,and bread Warning: Slippery When Wet C? The menu includes the following salmon,beef,and pork The menu includes the
asked by Jerald 
CHEMISTRY
how many atoms of C are present in 315.93 g (6.79e24 molec) of CO?
asked by anonymous 
QBASIC, Computers question 2
Why do I keep getting a Type Mismatch error on this line? Also, when i click "View" to view my output screen its blank, so nothing is printing.... can so please help me resolve this? PRINT USING D$; NAM$; VehicleType$; DaysHeld; Miles; Charge My Code:
asked by Jason 
pre algebra
1/3m  7 =5
asked by vanessa 
Algebra
A rope 116 inches is cut into three pieces.The middlesized piece is 10 inches shorter than twice the shortest piece.The longest piece is 5/3 as long as the shortest piece.What is the length of the shortest piece?
asked by Reshanee F 
space
i need help.i need info about if the sun gives the same amount of lite to both sides of the world.HELP ITS TOMMORROW
asked by nyamka 
Algebra 1b
Explain how to factor the following trinomials forms: x² + bx + c and ax² + bx + c. Is there more than one way to factor this? Show your answer using both words and mathematical notation.
asked by Yolonda 
Psychology
what is the opposite of background stressor?
asked by Zion 
Math
In a group of 24 people 6 are under age 12. 5 are from ages 12 to 19 and 13 are over age 19. If you randomly selected 1 of the group members to sit next to what is the probability hat he will be under 12? A.1 in 24 B.1 in 12 C.1 in 7 D.1 in 4 D? Kathleen
asked by Jerald 
PHYSICS PLEASE HELP DUE SOON
Carnot engine operates between 170°C and 23°C. How much ice can the engine melt from its exhaust after it has done 4.5 104 J of work?
asked by amela 
pre algebra
solve the equation 78= 2(m+3)+ m
asked by vanessa 
math
Suppose an insurance agent offers you a policy that will provide you with a yearly income of $120,000 in 30 years. What is the comparable annual salary today, assuming an inflation rate of 2%?. (Round your answer to the nearest cent.)
asked by jacque 
AAlgebra 1
Graph each equation by making a table. Y = 4
asked by Ashley 
Linear equation
Graph each equation by making a table. Y = 4
asked by Ashley 
College History
Would Russia have had a revolution had it avoided the First World War?
asked by breanna 
7th grade social studies Ms. Sue please
1. While Earth's orbit around the sun takes roughly 365 days, a single rotation of Earth takes about (1 point) 8 hours. 24 hours. 1 month. 12 months. 2. During the summer solstice in the United States, the ______ _______ is tilted farthest toward the sun.
asked by Delilah 
Math
Month. Temperature January 41f February 45f March. 54f April. 62f May. 69f Between which two months in Atlanta does thaw normal temperature change the most?
asked by Shion 
Adult Development and life Assessment
Psychologists use theories primarily to 1.Make predictions about behavior 2. Maniplate people and groups 3. create controversies 4. Analyze personality My answer: Make predictions about behavior.
asked by Regina 
Story 'the necklace ' by guy de Maupassant
Describe how u felt about Mathlide at the beginning of the Story , and how u felt about her at the end . Just 3 sentences plz. I wrote a few things
asked by Mia 
science
What does it mean to be a successful organism? Is bacteria the most successful organisms on earth?
asked by Katie 
Math
what is the equation for the perpendicular bisector of the line segment whose endpoints are (7,2) (1,6)
asked by Will 
Algebra Grade 7 (Rotation)
If you rotate a clock clockwise 90° from 3:00, what will it be?
asked by rawr... im a dinosaur.... rawr 
math
she drives 69 miles each way.about how many miles does melissa drive in 52 weekends?
asked by hong 
Algebra2
Check? Find the center and radius of the given circle 1. x^2+y^2+10y+21=0 = 5
asked by Nessa 
Absolute Value in Open Sentences
For the problem t4>t4 how would you graph it?
asked by Tracey 
US History
I am doing an altar on founding mothers and my founding mother is Abigail Smith Adams and there are some questions that I need help on! Please help!!!! Why should Abigail Adams be honored? What plant best represent her ideals, character, or accomplishments
asked by Darcy 
science
what needs to go out of a cell
asked by Jeremy 
physics
a ball is thrown up and reaches a maximum height of 5 m. a) what is the initial velocity of the ball? b) how long does it take for the ball to reach its maximum height? c) what is the final velocity of the ball? if i returns to where it was thrown from?
asked by Isis 
Algebra2
Determine if the given relation is function or not. Give its domain and range. 16. (1, 2), (1, 3), (1, 4), (2, 5) 17. (1, 1), (2, 2), (3, 3), (4, 4)
asked by Nessa 
Chemistry  Melting Ice
The heat of fusion of ice is 6.00 kJ/mol. Find the number of photons of wavelength = 6.78×10^−6 m that must be absorbed to melt 6.80 g of ice.
asked by Jayden 
physics
a tennis ball is dropped from the top of 12.2 m tall building. b) how long does it take for the ball to hit he ground? c) what is the velocity of the ball the split second before it hits the ground?
asked by Isis 
english
Add punctuation to the following excerpt. Writing under the name of Diedrich Knickerbocker Washington Irving aimed his potent satire at as diverse topics as political rivals such as Thomas Jefferson to the very ideal of looking back on the past
asked by desmond 
Math
12 over 7 simplified
asked by D 
chem
What is the color of a solution that contains two drops of ohenolphthalein in acideic solution? What is the color in basic solution? My answer is the color in acidic turns colorless in basic solution the color will be pink. Pls. correct me if i'm wrong.
asked by Angel Locsin 
physics
a tennis ball is thrown vertically upward with an initial velocity of +8.0 m/s a) what is the velocity of the ball when it returns to its starting point? b) how long is the ball in the air? c) how high does the ball reach?
asked by Isis 
Math
Harry rides his bike 25 3/8 miles. Karen rides her bike 25 2/5 miles. Who rides farther? Explain?
asked by Bell 
Math
Can someone show me step by step on how to factor/solve this problem explaining the steps? 5.50 = (0.02x^3 + 5x) / x
asked by Steph 
Physics
Estimate how many molecules of air are in each 2.5 L breath you take that were also in the last breath Einstein took (assumed to be the same volume). (Hint: Assume the atmosphere is about 11 km high and of constant density. Take the temperature of the air
asked by Anonymous 
Algebra2
Write an equation for the line in point/slope form and slope/intercept form that has the given condition. 1. Passes through (3, 2) and is parallel to 2xy=4 2. Passes through (1, 1) and is perpendicular to y = 5/2x + 3
asked by Pablo 
Algebra
The yearly production of a 5 foot orange tree is 34 pounds of oranges. A 14 foot tree produces 86 pounds of oranges. Let h represent the height of an orange tree and p the number of pounds of oranges produced. List the ordered pairs.
asked by Antonio 
math
Is 6.35 times 4.8= 30.480
asked by Math Geek 
Math
Will is five feet tall. He casts a 3 feet shadow at the same time that a tree casts a 9 feet shadow. Use similar triangles to find the height of the tree.
asked by Lillia 
Physics
Estimate how many molecules of air are in each 2.5 L breath you take that were also in the last breath Einstein took (assumed to be the same volume). (Hint: Assume the atmosphere is about 11 km high and of constant density. Take the temperature of the air
asked by Anonymous 
Chemistry
Metals yield at a stress much lower than those calculated on the basis of their bond strength alone. This is explained by the presence of defects. Identify the principal defects responsible for this observation. A)Grain Boundaries B)Interstitial Metal
asked by Odesa 
physics
Suppose the roller coaster in Fig. 641 (h1 = 38 m, h2 = 11 m, h3 = 25) passes point 1 with a speed of 1.60 m/s. If the average force of friction is equal to one sixth of its weight, with what speed will it reach point 2? The distance traveled is 45.0 m.
asked by bob 
Chemistry
You have a single crystal of 100% pure gold. Identify which of the following defects you would expect to be present at room temperature. Free surface Grain boundaries Vacancies Inclusions Substitutional impurity atoms Interstitial impurity atoms
asked by Odesa 
physics
an eagle flying in a horizontal path drops a twig from a height of 8.2 m. The twig travels 12 m horizontally before it hits the ground. What was the eagle's initial speed?
asked by Isis 
chemistry
ph of 10 grams of sodium acetate and 100 mL of .5M acetic acid
asked by ryan 
science
A tall volcano, sometimes as high as 10,000 feet, composed of lava, ash, and other volcanic material and that can have explosive eruptions is best known as a ___________________.?
asked by nunu 
physics
a child knocks a ball off a table with a height of 0.60 m. The initial velocity of the ball is 2.4 m/s. What will be the horizontal distance between the edge of the table and where the ball lands?
asked by Isis 
Math
Alfred Juarez paid off a 15,000 car lon over3 years with monthly payments of $ 487.54 each. Find the finance charge and the APR
asked by Andrzej 
Chemistry
N2O5 dissolved in CCl4 decomposes to give N2O4 and O2. The reaction is first order with a halflife of 1234 seconds. How long will it take, in seconds, for the concentration of N2O5 to fall to 1.1% of its initial value?
asked by Odesa 
Algebra2
Decide whether y is a function of x. 1. 5x  y = 10 2. x^2 + y^2 = 4
asked by Jojo 
chem
An erlenmeyer flask contains 56.7 g of KMnO4. How many grams of manganese is in the flask?
asked by Liam 
Stats
Macintosh users make up about 5% of all computer users. A computer training school that wants to attract Macintosh users mails an advertising flyer to 25,000 computer users. If the mailing list can be considered a random sample of the population, what is
asked by Amy 
Math
5 over 8 times 3
asked by Anonymous 
Physics
A 25000 kg truck moving at 40 m/s on a road angled at 17° hits a 10000 kg van moving at 25 m/s on a road angled at 60° at an intersection between two the two roads. Since this is a twodimensional perfectly inelastic collision, what is the final velocity
asked by Scoop 
Chemistry
H6P7: Young's Modulus Rank the following 3 classes of materials in order of increasing typical Young's Modulus: metals such as copper, plastics such as HDPE (high density polyethelene), and ceramics such as alumina (Al2O3). Do not look up the values of
asked by Odesa 
Algebra2
Find and simplify a) f(a), b) f(a + h) and c) F(a+h)  f(a) / h ; 1. f(x) = x^2 + 5x 10
asked by Devin 
Math
Tickets to King Middle School play cost $1 for King students and $3 for everyone else. Rose, a student at King Middle School, went to the play with friends from another school. the group paid a total of $13 for the tickets. How many friends went to see the
asked by Help 
Chemistry
H6P8: Elongation A steel cable 10 m long is pulled in tension with a stress of 350 MPa. Assume that the Young's modulus of the steel cable is about 200 GPa. If only elastic deformation occurs, what is the resultant elongation in cm?
asked by Odesa 
physics
A crate is sliding down a ramp that is inclined at an angle of 55.4° above the horizontal. The coefficient of kinetic friction between the crate and the ramp surface is 0.501. Find the acceleration of the moving crate.
asked by Russ 
math
Please, help me! 5/(x^2  4) + 2/(x^2  4x  3)  3/(x^2  x  6)
asked by David 
Physics
What is the magnitude of the electric field 0.3 m from a 104 C point charge?
asked by Karl 
Physics
Two resistors of equal resistance are connected in series with each other and are connected to a battery that produces a potential difference of 8 V. If the current is 0.2 A what is the value of each resistance?
asked by Stan 
math accounting
The following information was drawn from the accounting records of Kwon Company as of December 31, 2012, before the temporary accounts had been closed. The Cash balance was $4,000, and Notes Payable amounted to $2,000. The company had revenues of $6,000
asked by quita 
english
Im not really good at English so I need some help with this punctuation Add punctuation to the following excerpt. Writing under the name of Diedrich Knickerbocker Washington Irving aimed his potent satire at as diverse topics as political rivals such as
asked by desmond 
6th grade math
Having problems with surface area of a triangular prism. I know the formula is ab + (S1 + S2 + S2)h, however I can't tell what all 3 sides of the trianle are from the picture. The triangular face shows a height of 50 in and a base of 20 in. No other
asked by Brandi 
Physics
What is the equivalent resistance of two resistors of 2 ohm and 3 ohm connected in parallel?
asked by Ashley 
Physics
A 10 ohm resistor is connected in series with a 15 ohm resistor. If this circuit is connected to a 9 volt battery, what will be the resultant current?
asked by Tim 
spelling
what does the vc/v and v/cv pattern mean?????Tell me pretty please please with a cherry ontop
asked by vanesa 
Physics
a 254kg crate is pushed horizontally with a force of 740 N. if the coefficient of friction is .20, calculate the acceleration of the crate
asked by Annie 
Algebra2
Give the domain of the function : 1. g(x) = 5 / x^2  25 2. f(t) = 3t^2 + 5t + 2 3. h(x) = SquareRoot Of : 5x  2
asked by Unknown 
math
A paperweight containing liquid is made up of a cone and a cylinder. The radius of the cone is 3cm with height of 4cm. The diameter is 20cm and height is 8cm. 1. Calculate the total volume of the cone and cylinder when it si empty, leaving your answer in
asked by Lindsay 
Stats
Macintosh users make up about 5% of all computer users. A computer training school that wants to attract Macintosh users mails an advertising flyer to 25,000 computer users. If the mailing list can be considered a random sample of the population, what is
asked by Amy 
CHEMISTRY HWK MAKES NO SENSE
How many grams of C are required to make 464.99 grams of this compound? compound= C3H8
asked by HELP 
Algebra2
Find the functional values f(5), f(1), and f(3) for the compound function. 1. f(x)= x5 if x≤1 ; (1)/(x+1) if x>1
asked by Unknown 
Math .. Please help Reiny
A group of 25 eight graders went to collect 300 blankets to donate to victims of super storm Sandy. If each student collects 7 blankets on the first day, how many more blankets will each student need to collect to reach their goal. Answer must include a
asked by Sunshine 
Chemistry
Calculate the energy released when an electron is added to a hydrogen nucleus. Assume the transition is n= infinite to n=1. I know equation to use but how do I calculate when n is infinite and no number ?? Please some help
asked by Anonymous 
Algebra2
Graph the given function using the given values of x. Also use the graph to determine the domain and range of the function. 1. f(x) = x^2 1 ; x = 3, 2, 1, 0, 1, 2, 3 2. g(x) = squareRoot Of ; x+1  2 ; x = 1, 0, 3, 8 3. h(x) = x3 ; x = 0, 1, 2, 3,
asked by Unknown 
Physics Difficult Please Help
If a 60N weight free falls onto a hollow ball what amounts of force are produced after 3 seconds of impact, if it lands .3m away of the center?
asked by Leo 
US Government
Using a graphic organizer describe the conditions of American citizenship
asked by Mary 
math
You need 1/2 cup of sugar to make a three layer cake. How much sugar would you need for onelayer cake?
asked by emma 
math
108 inches to feet
asked by annie2 
math
To Steve: My mom marked it wrong but I knew I got it right. THANKS!!!!
asked by Math Geek 
American History
true or false The Great Migration was a largescale movement of hundreds of thousands of southern African Americans to Weswtern farms.
asked by Anna 
math
name the operation needed to solve at the airport 72 people are waiting to board 9 different planes. If an equal number of people board each plain, how many people get on each plane?
asked by Gio 
math
(1) 9.6 dividedby 1.2=8 (2) 57.8 divided by 3.4= 17 (3) 2.3 divided by 21.643= 941 (4) 0.51 dividd by 0.459= 9 (5) 0.16 divided by 3.8= 23 remainder 12 (6) 0.78 divided by 15.6= (7) 0.048 dividedby 7.2=150.0 help Ms. Sue
asked by Casey 
math
I got $5.70 because I used the problem $4.20 divided by 4. By the way THANKS!!!! again.
asked by Math Geek 
math
12/14  3/17
asked by harsha 
physics
Two cars approach an icecovered intersection. One car, of mass 1.22 103 kg, is initially traveling north at 10.6 m/s. The other car, of mass 1.69 103 kg, is initially traveling east at 10.6 m/s. The cars reach the intersection at the same instant,
asked by Anthony 
math
write the first five terms of a geometric sequence whose first term is 100 and whose third term is less than 30
asked by jr 
PHYSIC
WHEN A MASS IS ATTACHED TO A VERTICAL SPRING,THE SPRING IS STRETCHED A DISTANDE d.THE MASS IS THEN PULLED DOWN FROM THIS POSITION ANDS RELEASED.IT UNDERGOES 50 OSCILLATIONS IN30SECONDS.WHAT WAS THE DISTANCE d?
asked by IE 
Seneca
Henrietta went to a bank and obtained a personal loan with an interest rate of 3.18% compounded monthly. if the effective interest rate on the loan were to decrease by 1%, calculate the new nominal rate compounded monthly?
asked by Madeleine 
Physics
A small ball is attached to one end of a spring that has an unstrained length of 0.202 m. The spring is held by the other end, and the ball is whirled around in a horizontal circle at a speed of 3.18 m/s. The spring remains nearly parallel to the ground
asked by Elizabeth 
algebra 2
Evaluate (7+3i)  (2 5i)
asked by Ashley 
Math / Factoring
Imogene wants to make an opentop box for packing baked goods by cutting equal squares from each corner of an 11 in. by 14 in. piece of cardboard. She figures that for versatility the area of the bottom must be 80 in.^2. What size square should she cut
asked by Steph 
physics
An athlete whirls a 7.54 kg hammer tied to the end of a 1.5 m chain in a horizontal circle. The hammer moves at the rate of 1.51 rev/s. What is the centripetal acceleration of the hammer? Assume his arm length is included in the length given for the chain.
asked by Anonymous 
Physics
A 15.0kg block rests on a horizontal table and is attached to one end of a massless, horizontal spring. By pulling horizontally on the other end of the spring, someone causes the block to accelerate uniformly and reach a speed of 5.00 m/s in 0.460 s. In
asked by Elizabeth 
physics
a 2m long string of mass 10g is clamped at boths ends.the tension in the string is 150N.the string is plucked so that it oscillate.what is the wavelength and frequency of the resulting wave it is produce a standing wave with two antinodes?
asked by IE 
physics
An athlete whirls a 7.54 kg hammer tied to the end of a 1.5 m chain in a horizontal circle. The hammer moves at the rate of 1.51 rev/s. What is the centripetal acceleration of the hammer? Assume his arm length is included in the length given for the chain.
asked by Anonymous 
physics
a 2m long string of mass 10g is clamped at boths ends.the tension in the string is 150N.the string is plucked so that it oscillate.what is the wavelength and frequency of the resulting wave it is produce a standing wave with two antinodes?
asked by IE 
precalc/trig
olve for the interval [0, 2pi]. cos(x+ pi/4)+cos(x pi/4)=1
asked by bob 
physics
An athlete whirls a 7.54 kg hammer tied to the end of a 1.5 m chain in a horizontal circle. The hammer moves at the rate of 1.51 rev/s. What is the centripetal acceleration of the hammer? Assume his arm length is included in the length given for the chain.
asked by Anonymous 
physics
An athlete whirls a 7.54 kg hammer tied to the end of a 1.5 m chain in a horizontal circle. The hammer moves at the rate of 1.51 rev/s. What is the centripetal acceleration of the hammer? Assume his arm length is included in the length given for the chain.
asked by Anonymous 
physics
why do you find the same wavelengths and colors on each side of the central maxima?
asked by opp 
physics
A missile of mass 110 kg is fired from a plane of mass 5500kg initially moving at a speed of 315 m/s. If the speed of the missile relative to the plane is 1060 m/s, what is the final velocity of the plane?
asked by Anthony 
Physics Can you please get me started
In a running event, a sprinter does 5.5 105 J of work and her internal energy decreases by 8.8 105 J. Determine the heat transferred between her body and surroundings during this event. ________ J
asked by amela 
math
jessica baked 10 dozen cookies.she left 1/8 of the baked cookies home and took the rest to school for the bbake sale.how many cookies did jessica take to school?
asked by tashnie 
Algebra2
Check Please? Determine if the given function is even, odd or neither. 1. f(x) = 3x^4  2x^2 =Even. 2. f(x) = x^3 + x = Odd.
asked by Pam 
Chemistry
How do you convert 2.1786*10^18 J to kj/mole and this is the energy released when an electron is added to hydrogen nucleus. I been trying to figure this out for 30 mins and I still didn't get it please help
asked by Anonymous 
Algebra2
Check ? If f(x) = int(x), find the given functional value. 35. f(14.321) = 14
asked by Victoria 
Chemisty
For the following equilibrium; Br2 (g) + Cl2 (g) ⇄ 2BrCl (g) the Kc = 7.00 at 127oC. If 0.450 mol of Br2 (g) and 0.450 mol of Cl2 (g) are introduced into a 3.00 L container at 400 K, what will the equilibrium concentration of BrCl(g) be?
asked by OVA9000 
math
mr.hemley stands next to the Illionis centennial monument at logan square chicago and casts a shadow that is 18 ft long. The shadow of the monument is 204 ft tall, how tall is the monument?
asked by lanessa 
Math
Rename each repeating decimal as a fractio in lowest terms. Use Let statement, an equation, a proper solution (using Properties of Equality). 1) 0.87 2) 0.5406 3) 0.048 4) 3.274
asked by Sammyjoo 
chemistry
How would you prepare the following solution? a)2% NaCL(w/v) b).35M glucose C)0.12M CaCl2 For b I got glucose 0.35=wt/180=63gm/L, but not sure if I'm doing it right.
asked by John 
earth science
if carbon 14 has a half life of 24 days how much would be left of 220 gram sample after 168 days
asked by lan 
Two Dimensional elastic
A 25000 kg bowling ball moving at 40 m/s on a path angled at 17° hits a 10000 kg bowling ball moving at 25 m/s on a path angled at 60°, causing the lighter ball to be deflected off to an 80° angle. Assuming this is a twodimensional perfectly elastic
asked by Scoop 
earth science
if carbon 14 has a half life of 24 days how much would be left of 220 gram sample after 168 days
asked by lan 
earth science
if carbon 14 has a half life of 24 days how much would be left of 220 gram sample after 168 days
asked by lan 
science
speed=frequencyxwavelengthc=f please explain
asked by j 
Math
A hot air balloon is rising vertically. From a point on level ground 125 ft. from a point on ground level directly under the balloon the angle of elevation of the balloon changes from 19.2 to 31.7. How far does the balloon rise during this period? Draw a
asked by Thalia 
PHYSICS DUE SOON
In a running event, a sprinter does 5.5 105 J of work and her internal energy decreases by 8.8 105 J. (a) Determine the heat transferred between her body and surroundings during this event. _____J
asked by Ame 
geomatry
write the first 5 term in the sequence that represent this situation. each term should indicate the total number of students that can sit around one, two, three, four, and five tables. explain your reasoning.
asked by annoymose 
Physics
A sealed box containing a chunk of ice is made of 2cm thick wood, a good thermal insulator. The air outside the box is warm. It takes the ice one hour to melt. If I had put 2cm of aluminum (a good thermal conductor) around the outside of the box, in
asked by StressedStudent 
PHYSICS DUE SOON
A gas is compressed at a constant pressure of 0.800 atm from 6.00 L to 1.00 L. In the process, 380 J of energy leaves the gas by heat. ____J
asked by Ame 
Physics
The igloo shown at the very start of chapter 13 is meant to keep out the cold. Which would work better: an igloo made of ice 15cm thick or an igloo made out of concrete 15cm thick? Ice Concrete
asked by StressedStudent 
earth science
what would be the chart to use for carbon 14 whcih has a half life of 5730 years and a piece of wood which originally has 12 grams pf radioactive isotope; If the half lives occurred and now has 0.75 grams left?
asked by lan 
Adult Development and life Assessment
What separates the thnking of adolescents from that of younger children? 1. Adolescents can think about various possiblities. 2. Adolescents gain the ability ot think about their senses and movement. 3. Adolescents begin to understand how lanuguage is used
asked by Regina 
CHEMISTRY
A 0.02718 mg sample of an unknown compound was found to contain 0.0094 mg of Fe, and 0.0178 mg of Cl. It was also determined that the unknown compound had a molecular weight of 162.10 g/mol. What is the molecular formula for this compound?
asked by anonymous 
English
Read each sentence Then write the conjunctive adverb or transitional expression I was happy with my grade; indeed, I was thrilled with the B indeed? There's no need to panic; at this time, it is best to wait for the test results at this time? Mom wanted to
asked by Jerald 
math
A figure has 2 sets of parallel sides and 4 right angles. All of the sides are the same length. What are the 3 names for the figure?
asked by mythreyee 
math
Yosuf has three grey socks and four blue socks in his sock drawer. He pulls out a pair of socks in the dark. (a) What is the total number of possible outcomes? (b) What is the probability that the pair of socks selected is grey? (c) What is the probability
asked by A 
PHYSICS DUE SOON
A Carnot engine operates between 170°C and 23°C. How much ice can the engine melt from its exhaust after it has done 4.5 104 J of work?
asked by Ame 
chem
Calculate the pH of each and determine whether each of the following solutions is acidec or basic. a) [H^+]=1.0 e11M solution b) [OH^]=1.5 e3M solution c) [H^+]=5.2 e 5M solution
asked by Bea Alonzo 
Finance
Giant Motor Company Plant characteristics Lyra Libra Hydra New Lyra New Libra Capacity (in millions) 1 0.8 0.9 1.6 1.8 Fixed cost (in $billions) 2 2 2.6 3.4 3.7 Profit margin (in $1000s) per car (large negative numbers mean the plant can't make that car)
asked by shankar 
PHYSICS DUE SOON
A 95.1g ice cube is initially at 0.0°C. (b) What is the change in entropy of the environment in this process? ___________J/kg
asked by Ame 
math
A rectangular pool's depth is 1m at the shallow end and gradually increases to 4m at the deep end. The pool is 32m in length and 12m width. 1. calculate the total surface area (m squared) of the pool. 2. The cost of painting the pool at $5 per square foot.
asked by Lindsay 
english
Which of the following is an example of an emotional appeal? A. Many organizations have offered recommendations. B. It will have global impact in the near future. C. It will be the greatest environmental tragedy. D. More than 90 percent of the scientists
asked by Lexis 
math
Aarthi borrowed $18,500 at 5%p.a from her father tostart her software business. at the end of 3 months she paid him $5,000 and $6,000 at the end of 8 months. how much would she have to pay him at the end of 16 months to clear the balance? pleas answer!
asked by flor 
Math
If a rectangle measures 8 inches by 23 inches, what is the area
asked by Alinna 
chem
A 0.01020 mg sample of an unknown compound was found to contain 0.0084 mg of C, and 0.0018 mg of H. It was also determined that the unknown compound had a molecular weight of 58.12 g/mol. What is the molecular formula for this compound?
asked by HELP 
Chemistry
A propane stove burned 470. grams of propane and produced 625 milliliters of water. What is the % yield? C₃H₈+5O₂ > 3CO₂+ 4H₂O
asked by Josh 
math
there are 2 numbers one number is 7 more than the other and the two numbers equal 60 what are those two numbers?
asked by gool 
math
Suppose you have a $1,000 charge on a credit card charging 1% monthly interest using the adjusted balance method. The minimum payment due in May is $30. How much will you save in interest charges in June by paying $60 instead?
asked by Anonymous 
Chemistry
At T = 25 degrees Celsius, the reaction No2 2NO +O2 has an equilibrium constant K=5.0*10^13. Suppose the container is filled with NO2 at an initial pressure of 0.25 atm. Calculate the partial pressure of NO at equilibrium
asked by Paul 
Physics
Describe the waves reflected from an elliptical reflector when the incident wave comes from a point source at one focus of the ellipse?
asked by Raju Singh 
ss
9. Shay's Rebellion in 1787 was an attack on the new federal government. the British government. Canada. Native Americans.
asked by Anonymous 
Astronomy Grade 9( PLEASEEE HELP!!!!!!!!!!!!!!)
What hazards do humans face when they are in space and what technologies have been developed in response to these hazards?
asked by Curly Sue 
SCIENCE HELP ME
CAN ANYBODY EXPLAIN A VIRUS IN ACTION TO ME CHLAERLY LIKE THE STEPS PLZ I REALLY WOULD LVE THAT ;)
asked by tesj 
Physics
(a) What is the shape of the radio waves from a satellite when they reach a dish antenna on the roof of a building? Explain. (b) Explain what happens to these waves when they reach the dish.
asked by Raju Singh 
math
The demand function for a certain brand of CD is given by the following equation where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. P=0.01X^20.1X+6 Determine the consumers' surplus if
asked by britney 
Algebra2
Check? 25. f(x)= x^21 ; 3, 2, 1, 0, 1, 2 ,3 = f(x); 3^21=10 f(x) ; 2^21=5 f(x) ; 1^21=2 f(x) ; 0^21=1 f(x) ; 1^21=0 f(x) ; 2^21=3 f(x) ; 3^21=8 26. g(x); √(x+1)2 ; x+1, 0, 3, 8 g(x) ; √(1+1)2=2 g(x) ; √(0+1)2=1 g(x) ;
asked by Unknown 
English
Read the two independent clauses in each term. Then join them in one sentence using a semicolon and a conjunctive adverb or transitional expression I wanted to go to the game. I had to help out at home I wanted to go to the game; however, I had to help out
asked by Jerald 
chem
How many moles of CoCO3 are there if sample has 2.84 times 10 to the 16th power carbonate particles
asked by punkin 
us history
Compara and contrast your modern immigrant to historical immigrants. Atleast 10 bullets on each section. (Historical Immigration, both, and Modern immigration)
asked by Emily 
science
How much sugar must be added to 50g of water to make a saturated solution at 0 degrees?!
asked by Danielle 
basic math
An education fund allocates RM10,000 to help 100 students from form three, form five and form six in a school. Each form three student receives RM80, each form five student receives RM120 and each form six student receives RM160. The number of form three
asked by kchik 
Math
An orange grower has 96 orange trees to plant in her grove. She wants to plant them equally in groups. Each group will have at least 2, but no more than 10. How many different ways can they be divided evenly into these groups?
asked by Anonymous 
physics
Rank, from smallest to largest, the pressures in the tank of motionless fluid shown in the figure.
asked by Anonymous 
Health
I need a good site that talks about Hallucinogens and Dissociative Drugs
asked by Ayahna 
chemistry
While you are at rest, your brain gets about 15% by volume of your blood. If your body contains 5.2 L of blood, how many liters of blood are in your brain at rest? and how many quarts?
asked by carol 
math
police officer johnson is 6.2 ft tall and casts a 2.3 ft shadow. at the same time. his nearby car casts a shadow which is 12 ft long. write a proportion to find the hight of the SUV.
asked by ANNONIMUS 
chemistry
Its general formula is BaTi(SiO3)3.If a 15carat stone were pure BaTi(SiO3)3, how many moles of silicon would it contain? (There are exactly 5 carats per gram.)
asked by linda 
physics
An 85.7 N box of clothes is pulled 26.2 m up a 31.7 ◦ ramp by a force of 112 N that points along the ramp. The acceleration of gravity is 9.81 m/s 2 . If the coeﬃcient of kinetic friction between the box and ramp is 0.24, calculate the change in the
asked by Anonymous 
Science
d) the density of gasoline is 0.703g/ml
asked by Teezee 
English
Read each sentence. Find the semicolon mistake. Rewrite the sentence The story has interesting characters, Tom and Luisa, action; and history, a Civil War setting. The story has interesting characters; Tom and Luisa, action, and history; a Civil War
asked by Jerald 
chem
What is the OH^ concentration of an aqueous solution with H^+ concentration of 10^4M? Calculate the pOH? pls. help thanks
asked by Angel Locsin 
algebra  absolute value
i'm doing absolute value in open sentences and then graphing them. how would you solve t4 > t4 ?
asked by Tracey 
Math
When rolling two dice, what is the probability that the sum is 7 given that one die is a 5?
asked by Michelle 
Math
x^24x32 / x^220x96 how do you simplify this?
asked by Liz 
Math
What would the surface area be for a rectangular prism that has a height of 12 ft, a length of 12 ft, and a width of 2 ft? Thanks.
asked by Brandi 
Math
b= 5 1/2 divided (2 3/4)
asked by Keyanna 
Physics
bullet traveling 8.o*10^2 (800) meters per second horizontally hits a target 180 m away. how far does the bullet fall before it hits the target?
asked by Taylorr 
Physics
A dart gun is ﬁred while being held horizontally at a height of 1.52 m above ground level, and at rest relative to the ground. The dart from the gun travels a horizontal distance of 7.81 m. A child holds the same gun in a horizontal position while
asked by Big Poppa Smurf 
Physics
A golfer is enjoying a day out on the links. What maximum height will a 323.5 m drive reach if it is launched at an angle of 21.0◦ to the ground? The acceleration due to gravity is 9.81 m/s^2. Answer in units of m
asked by Big Poppa Smurf 
chemisty
What is the approximate mass of 2L of C4H10 gas at STP?
asked by karen 
Physics
A bomber ﬂies horizontally with a speed of 431 m/s relative to the ground. The altitude of the bomber is 2630 m and the terrain is level. Neglect the eﬀects of air resistance. The acceleration of gravity is 9.8 m/s^2. A) How far from the point
asked by Big Poppa Smurf 
Physics
A science student riding on a ﬂatcar of a train moving at a constant speed of a 9.70 m/s throws a ball toward the caboose along a path that the student judges as making an initial angle of 45.0◦ with the horizontal. The teacher, who is standing on the
asked by Big Poppa Smurf 
Algebra2
Check? Find the slope of the line that is a) parallel and b) perpendicular to the given line. 1.x=8 = 1/2x ; 3/7y 2.y=10 =2/3x ; 2/5y
asked by Nessa 
chemistry
A steel cable 10 m long is pulled in tension with a stress of 350 MPa. Assume that the Young's modulus of the steel cable is about 200 GPa. If only elastic deformation occurs, what is the resultant elongation in cm?
asked by sveta 
Question (english related)  please read!
Progressing Gradually  The student is making less anticipated progress but may still achieve the goal. What does this mean?????
asked by Laruen 
english
what is the subject and verb phrase of "Go to the snack bar before the movie"
asked by daniel 
science
15.0g of potassium acetate is added to 500.0mL of 0.50M solution of acetic acid. What is the pH and the pOH of the solution?
asked by sam 
chemisty
What volume of 0.250 M calcium chloride needs to be added to sodium phosphate to produce 35.0g of calcium phosphate?
asked by kenny 
chemistry
A steel cable 10 m long is pulled in tension with a stress of 350 MPa. Assume that the Young's modulus of the steel cable is about 200 GPa. If only elastic deformation occurs, what is the resultant elongation in cm?
asked by sveta 
Intergrated Algerbra
A caterpillar and snail are 300 ft apart. They meet face to face in 5 hours. What were their speeds?
asked by janet 
history
does crossing the color line mean how light skinned african americans would pass as being white in order to avoid racial discrimination?
asked by Blaze 
physics
Question 4 A 0.9 kg block attached to a spring of force constant 2.1 N/m oscillates with an amplitude of 9 cm. A)Find the maximum speed of the block. Answer in units of m/s B)Find the speed of the block when it is 4.5 cm from the equilibrium position.
asked by maura 
Chemistry
An unknown solution may contain one of the ions of the pair below. Devise a test which allows you to distinguish between the ions. Cu2+(aq) and Co2+ (aq)
asked by Charlie 
SCIENCE
I have 2 questions that I need help with please. 1.What are the three parts of the law of conservation of mass/matter? Do not need the definition but the 3 laws please. 2. How are velocity, speed, and acceleration related? I know how they are different
asked by QUICK PLEASE HELP 
science
Illnesses such as malaria, yellow fever, and sleeping sickness are transmitted by
asked by Anonymous 
math
6. The length of the hypotenuse of a right triangle is 15 cm. The length of one leg is 9 cm. Find the length of the other leg. 6 cm 12 cm 17 cm 144 cm
asked by hard questions PLZZ answer! 
Physics
In an interference of light experiment, coherent light that contains two wavelengths: 614 nm (redorange) and 429 nm (indigoblue), passes through two narrow slits separated by 3.12 μm, and the interference pattern is observed on an observation screen
asked by Jalopy 
Algebra2
Check? Write the standard form of the equation of the circle with the given center and radius. 14. center (2, 0) and r = 3 =18
asked by Nessa 
chem
Can anybody explain to me how to determine the endormicity and exormicity in a reaction and where does the equilibrium shift. Pls. give an example of it. Iwas reading my book and trying to understand but i really can't comprehend it. Now I'm stuck here i
asked by Angel Locsin 
Physics
bullet traveling 8.o*10^2 (800) meters per second horizontally hits a target 180 m away. how far does the bullet fall before it hits the target?
asked by Taylorr 
chemistry
N2O5 dissolved in CCl4 decomposes to give N2O4 and O2. The reaction is first order with a halflife of 1234 seconds. How long will it take, in seconds, for the concentration of N2O5 to fall to 1.1% of its initial value?
asked by NIK 
Math
Indentify the fractions represented by A and B. 0 A 1 B
asked by Alinna 
Math
A balloon is slowly losing air , decreasing from a volume of 75cubic cubic inches to 55 cubic inches.What is the balloons percentage decrease in volume
asked by Destiny acott 
algebra
I need someone to explain the steps in finding all zeroes of an equation x^46x^27x6=0
asked by lee 
English
In Romeo and Juliet, what is ironic about Lord Capulet's praise of Friar Lawrence in Act 4 Scene 2?
asked by Emily 
physics
In a running event, a sprinter does 5.5 105 J of work and her internal energy decreases by 8.8 105 J. Determine the heat transferred between her body and surroundings during this event. ________ J
asked by amela 
Statistics
I need to know how to find the probability that z0 is greater than or equal to 2.40 using my TI83+. The answer is .008200, but I don't know how to get that using my calculator. The only reason I know the answer is because it is an example from my
asked by Chris 
physics
A gas is compressed at a constant pressure of 0.800 atm from 6.00 L to 1.00 L. In the process, 380 J of energy leaves the gas by heat. What is the change in its internal energy?
asked by amela 
music
which genre of music was influenced by r&b, jazz, and pop?
asked by Anonymous 
physics
Carnot engine operates between 170°C and 23°C. How much ice can the engine melt from its exhaust after it has done 4.5 104 J of work?
asked by amela