Questions Asked on
February 24, 2011

physics
A slingshot consists of a light leather cup attached between two rubber bands. It takes a force of 32 N to stretch the bands 1.1 cm. a) What is the equivalent spring constant of the rubber bands? Answer in units of N/m.
asked by anna 
chem
What type(s) of intermolecular force is (are) common to each of the following. (Select all that apply.) 1) Xe and methanol (CH3OH) a)londondispersion forces b)dipoledipole c)hydrogen bonding i put a and b but it was wrong 2)CH3OH and acetonitrile (CH3CN)
asked by Rebekah 
Chemistry
Balance this equation. NaHCO3(s) + heat > Na2CO3(s) + H2O(l) + CO2(g). i balanced it & got: 2NaHCO3(s)+ heat >Na2CO3(s)+ H2O(g)+CO2(g) is this right ? Determine how many moles of CO2(g) is produced when 7mols of NaHCO3 are consumed. how do i do this
asked by Hannah 
math
Tierra, Nico, and Alex had $865 altogether. Tierra spent 2/5 of her money. Nico spent $40,and Alex spent twice as much as Tierra. If the three had the same amount of money left, how much money did alex have in the begging?
asked by julia 
Engineering Physics
A 1.0kg block is released from rest at the top of a frictionless incline that makes and angle of 37 degrees with the horizontal. An unknown distance down the incline from the point of release, there is a spring with k=200 N/m. It is observed that the mass
asked by M 
Physics
If the speed of light through material Z is 2.5×10^8 m/s, what is this material’s index of refraction? The speed of light in a vacuum is 3 × 10^8 m/s.
asked by Maria 
Finance
Nine rights are necessary to purchase one share of Fogel stock at $50. A right sells for a $4. The exrights value of Fogel stock is
asked by Anonymous 
Chemistry
which substance has the greatest intermolecular forces of attraction between molecules ? 1)propanone 2)ethanol 3)water 4)ethanoic acid dont really understand, please help
asked by Hannah 
math
A standard deck of cards has had all the face cards (Jacks, queens, and kings) removed so that only the ace through ten of each suit remains. A game is played in which two cards are drawn (without replacement) from this deck and a sixsided die is rolled.
asked by Joey 
calculus
find the equation of the tangent line to the curve y=5xcosx at the point (pi,5pi) the equation of this tangent line can be written in the form y=mx+b where m= and b= what is the answer to m and b?
asked by Daniel 
Math
A room is 18 feet long, 14 feet wide , 8 feet high. find the cost of painting the four walls with two coats of paint costing $9.50 per gallon. each gallon covers 256 ft squared want with 1 coat .
asked by Mathdude 
Math
Find the surface area A hemisphere with diameter 70 cm
asked by plz help! 
organic chemistry
suppose solute A has a partition coefficient of 4.0 between diethyl ether and water. Demonstrate that if 100mL of solution of 5.0g of A in water were extracted with two 25mL portion of diethyl ether, a smaller amount of A would remain in the water than if
asked by Krystal 
physics
A 25.1 g marble moving to the right at 22.9 cm/s overtakes and collides elastically with a 12.1 g marble moving in the same direction at 11.3 cm/s. After the collision, the 12.1 g marble moves to the right at 25.1 cm/s. Find the velocity of the 25.1 g
asked by bob 
chemistry
At a pressure of 405 kPa, the volume of a gas is 6.00 cm3. Assuming the temperature remains constant, at what pressure will the new volume be 4.00 cm3?
asked by sara 
Physics
Two point charges are separated by 10.0 cm and have charges of 2.0 μC and 2 μC, respectively. What is the electric field at the point midway between the two charges? (k = 8.99 x 109 N.m2/C2) A. 28.8 x 10 6 B. 14.4 x 106 C. 7.19 x 106 D. 3.59 x 106 E.
asked by Anthony 
Chem
Cyclopropane (C3H6) reacts to form propene (C3H6) in the gas phase. The reaction is first order in cylclopropane and has a rate constant of 5.87*10^4 at 485degreesC. If a 2.5L reaction vessel initially contains 724 torr of cyclopropane at 485degreesC, how
asked by Bryan 
statistics
The results of a medical test show that of 66 people selected at random who were given the test, 3 tested positive and 63 tested negative. Determine the odds in favor of a person selected at random testing positive on the test.
asked by Robert 
physics
A magician pulls a tablecloth from under a 200 g mug located 30.0 cm from the edge of the cloth. The cloth exerts a friction force of 0.105 N on the mug, and the cloth is pulled with a constant acceleration of 3.50 m/s2. How far does the mug move relative
asked by eric 
Physics
A projectile is launched with an initial speed of 40m/s at an angle of 25 degrees above the horizontal. The projectile lands 3 sec. later. Neglect air friction. What is the projectile's velocity at the highest point of it's trajectory? What is the straight
asked by Lady22 
physics
A load of 46 N attached to a spring that is hanging vertically stretches the spring 0.23 m. What is the spring constant? Answer in units of N/m.
asked by kelsi 
physics
One side of the roof of a building slopes up at 35.5°. A student throws a Frisbee onto the roof. It strikes with a speed of 15.0 m/s and does not bounce, but slides straight up the incline. The coefficient of kinetic friction between the plastic and the
asked by eric 
MATH 12U
Mary leaves a dock paddling her canoe at 3m/s. She heads downstreamat an angle of 30 degrees to the current which is flowing at 4 m/s. a) How far downstream does Mary travel in 10s? b) What is the length of time required to cross the river ifits width is
asked by Kevinn 
Chemistry
How do I prepare 80 mL of 0.10 M HC2H3O2 from a 6.0 M solution of Acetic acid? How do I prepare 80 mL of 0.10 M NH3 from 6.0 M ammonia?
asked by knswimmerkat 
math
Explain why the simultaneous equations y=1/2x+2 and 2yx:4 have an infinite number of solutions. What is diffrent about these equations compared with the equations in the first question ( the equations were y=2x+3 and 5y10x=5)? What is similar? ( include
asked by CJ 
Physics
A ray of light has an angle of incidence of 30.4 degrees on a block of quartz and an angle of refraction of 20.7 degrees. What is the index of refraction for this block of quartz?
asked by Maria 
trig
an art student wants to make a string collage by connecting six equally spaced points on the circumference of a circle to its center with sting. What would be the radian measure of the angle between two adjacent pieces of string, in simplest form?
asked by ganash 
12th grade English
arguments and counterarguments in "A Vindication of the Rights of Woman"
asked by Exie 
Physics
The mass of a sports car is 1200 kg. The shape of the car is such that the aerodynamic drag coefficient is 0.250 and the frontal area is 2.30 m2. Neglecting all other sources of friction, calculate the initial acceleration of the car ,if it has been
asked by Jamie 
Physics help!
An extreme skier, starting from rest, coasts down a mountain that makes an angle of 26.7 ° with the horizontal. The coefficient of kinetic friction between her skis and the snow is 0.248. She coasts for a distance of 10.5 m before coming to the edge of a
asked by Tiffany 
physics
A load of 46 N attached to a spring that is hanging vertically stretches the spring 0.23 m. What is the spring constant? Answer in units of N/m.
asked by kelsi 
math
how can you use 2x8 to find 4x8?
asked by eloy 
Chemistry
In a body of fresh water, a dissolved oxygen concentration of 0.262 or higher is usually needed to maintain a healthy aquatic ecosystem. For a lake to maintain this concentration, what is the maximum water temperature?
asked by Amy 
Chemistry
the vapor pressure of ethanol at its normal boiling point would be 1)80 kPa 2)101.2 kPa 3)273 kPa 4)373 kPa would it be 1 ?
asked by Hannah 
Physics
A grasshopper jumps 1.0 m from rest, with an initial velocity at a 47 angle with respect to the horizontal. Find the speed of the grasshopper? Find the maximum height reached?
asked by Lady22 
Chemistry
A piece of dry ice (solid carbon dioxide) with a mass of 25.5 g is allowed to sublime (convert from solid to gas) into a large balloon. Assuming that all of the carbon dioxide ends up in the balloon, what will be the volume of the balloon at a temperature
asked by Jake 
Statistics
Assume the heights of women are normally distributed with a mean given by 63.6 inches and a standard deviation given by 2.5 inches, the US Army requires women's height to be between 58 and 80 inches. Find the percentage of women meeting that height
asked by Anonymous 
physics
A mass of 0.52 kg attached to a vertical spring stretches the spring 39 cm from its original equilibrium position. The acceleration of gravity is 9.81 m/s2 . What is the spring constant?
asked by kelsi 
Physics!
One of the new events in the 2002 Winter Olympics was the sport of skeleton (see the photo). Starting at the top of a steep, icy track, a rider jumps onto a sled (known as a skeleton) and proceeds  belly down and head first  to slide down the track. The
asked by Tiffany 
math
Radioactive radium has a halflife of approximately 1599 years. What percent of a given amount remains after 100 years?
asked by rachel 
Chemistry
In a body of fresh water, a dissolved oxygen concentration of 0.262 or higher is usually needed to maintain a healthy aquatic ecosystem. For a lake to maintain this concentration, what is the maximum water temperature?
asked by Amy 
Chemistry
A piece of dry ice (solid carbon dioxide) with a mass of 25.5 g is allowed to sublime (convert from solid to gas) into a large balloon. Assuming that all of the carbon dioxide ends up in the balloon, what will be the volume of the balloon at a temperature
asked by Jake 
Chem
In lab, the ratio of moles C2O4^2/Fe^3+ was 0.0063 to 0.0017, which is 3.7 . However, I am having a hard time deducing the formula and charge on complex ion. The unbalanced formula I had to use was: Fe^3+(aq) + C2O4^2+(aq) = Fex(C2O4)y^(3x2y) Since the
asked by Alex 
Physics Mehanics
A meter stick is held vertically with one end on the floor and is then allowed to fall. Find the speed of the other end when it hits the floor, assuming that the end on the floor does not slip. (Hint: Consider the stick to be a thin rod and use the
asked by D 
physics collision
A 0.060 kg tennis ball, moving with a speed of 7.00 m/s has a headon collision with a 0.086 kg ball initially moving in the same direction at a speed of 3.10 m/s. Assume a perfectly elastic collision and take the initial direction of the balls as
asked by Johnathon 
Physics
How many calories are absorbed by a copper spoon with a mass of 200 grams as it changes from 28°C to 33°C? A) 0.00027 B) 3 C) 90 D) 13,000 And this one. How do i solve this one?
asked by Kaitln 
math !!!! :O
Tierra, Nico, and Alex had $865 altogether. Tierra spent 2/5 of her money. Nico spent $40 , and Alex spent twice as much as Tierra. If the three friends had the same amount of money left, how much money did Alex have in the beginning.
asked by Katherine 
Business Communication
Many organizational situations involve an audience that consists of a group of people. Which is an appropriate approach to analyzing this type of audience?
asked by Deb 
Chemistry
In a body of fresh water, a dissolved oxygen concentration of 0.262 or higher is usually needed to maintain a healthy aquatic ecosystem. For a lake to maintain this concentration, what is the maximum water temperature?
asked by Amy 
Physics
A point on the rim of a 0.75 m diameter grinding wheel changes speed at a constant rate from 15 m/s to 21 m/s in 6.2 s. What is the average angular acceleration of the wheel in rad/s^2?
asked by Britney 
marketing
A large community hospital, River Valley, has recently begun to acquire physician practices. At issue is whether to rename each acquired practice “River Valley Associates” or to leave each name alone. 1. What are the tradeoffs River Valley should
asked by shabana 
math
simplify the expression below (3x^2y5xy+12xy^2)(5xy^2+4xy) 3x^2y  xy + 17xy^2
asked by pavleen 
Physics
A nichrome wire has a radius of 0.50 mm and a resistivity of 1.5 ´ 10‑6 W‑m. What is the resistance per unit length of this wire?
asked by Anthony 
IPC
The specific heat capacity of aluminum is 0.22 cal/g°C. How much energy needs to flow into 20.0 grams of aluminum to change its temperature by 15°C? How do i set this problem up to solve it?
asked by Kaitlin 
physics
A 214 kg boat is sinking in the ocean. The boat's weight is partially offset by the 790 N buoyant force of the water. What is the net acceleration of the boat?
asked by Melissa 
Chemistry
Can someone please explain me how to do this problem? A 25mL solution of 0.5 M NaOH is titrated until neutralization into a 50mL sample of HCl. What was the concentration of the HCl?
asked by Abigail 
chemistry
15ml of 0.325M NaOH is delivered into 35ml HOBr solution of unknown concentration.The pH of the final solution is 7.48. Ka for HOBr is 2.0 x 109at 25C. Find the number of moles of OBr and HOBr in the final solution.
asked by bridget 
Physics
An Atwood's machine consists of masses m1 and m2, and a pulley of negligible mass and friction. Starting from rest, the speed of the two masses is 3.80 m/s at the end of 3.16 s. At that time, the kinetic energy of the system is 77.0 J and each mass has
asked by devin 
chemistry
Explain how you would prepare these solutions from powdered reagents and whatever glassware you needed: a. 2.0 L of 1.5 M KOH the answer is: a. To prepare 2.0 L of 1.5 M KOH, measure out 168 g of KOH and place it into a 2 L volumetric flask. Add water to
asked by lesa 
chemistry
If 80g of NaOH is added to 100mL water, what is the pH of the resulting solution?
asked by Amy 
Algebra 1
When a plane flies into the wind, it can travel 3000mi in 6 hr. When it flies with the wind, it can travel the same distance in 5 hr. Find the rate of the plane in still air and the rate of the wind.
asked by Ru 
calculus
A state charges polluters an annual fee of $20 per ton for each ton of pollutant emitted into the atmosphere, up to a maximum of 4,000 tons. No fees are charged for emissions beyond the 4,000ton limit. Write a piecewise de nition of the fees F(x) charged
asked by rosie 
math
Radioactive radium has a halflife of approximately 1599 years. What percent of a given amount remains after 100 years?
asked by rachel 
English plural form
Is plural for Kelly....Kellys or Kelly's?
asked by Austin 
Chemistry
Cyclopropane reacts to form propene in the gas phase. The reaction is first order in cylclopropane and has a rate constant of at 485 . If a 2.5 reaction vessel initially contains 724 of cyclopropane at 485 , how long will it take for the partial pressure
asked by Ellenne 
Physics
The rainsoaked shoes of a person may explode if ground current from nearby lightning vaporizes the water. The sudden converse of water to water vapor causes a dramatic expansion that can rip apart shoes. Water has density 1000 kg/m^3 and requires 2256
asked by Scott 
Business Communication
Which of the following would be classified as an informative or positive message? a) A request for information b) An announcement of a policy that reduces benefits c) A memo for the file recording actions and rationales d) A letter to an employer
asked by Hanna 
physics
A uniform spherical shell of mass M = 8.00 kg and radius R = 0.550 m can rotate about a vertical axis on frictionless bearings. A massless cord passes around the equator of the shell, over a pulley of rotational inertia I = 0.130 kg·m2 and radius r =
asked by jr 
Chemistry
Knowing that 2 aluminum atoms and 3 chlorine molecules react to produce 2 units of aluminum chloride, how many moles of aluminum chloride can be produced by reacting 7.8 moles of chlorine with excess aluminum?
asked by Joe Schmo 
PHYSICS
Bicyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass. (a) How much work does he do during a 117km race in
asked by Tiffany 
physics
prepare a standard solution of oxalic acid with a concentration of 0.05mol.dm3. a report of the investigation. give the aim, apparatus, method and results.
asked by anonymous 
math
find how much interest $15,000 earns in two years in a certificate paying 4.5% interest compounded quarterly?
asked by laz 
Math
A bag contains 3 red marbles, 5 yellow marbles and 6 orange marbles. Three marbles are drawn and NOT replaced each time. Determine the probability of drawing three yellow marbles in a row.
asked by Lola 
CALCULUS 3
Use the triple scalar product to determine whether the given points lie in the same plane. A(1, 2, 3), B(3, 4, 8), C(7, 1, 1), D(5, 5, 4)
asked by Jessica 
physics
Consider a square of side length a = 9.4 cm with charged particles at each of the corners.Three of the particles carry +9 nC of charge while the fourth particle carries 9 nC.In volts, what is the electric potential at the center of the square? Hint:
asked by Crystal 
Economics
An article in BusinessWeek warned of the dangers of deflation as the collapse of numerous Asian economies was creating worries that Asia might try to "export its way out of trouble" by oversupplying everything from automobiles to semiconductors. Evidence
asked by annie 
physics
Some European trucks run on energy stored in a rotating flywheel, with an electric motor getting the flywheel up to its top speed of 120 ð rad/s. One such flywheel is a solid, uniform cylinder with a mass of 270 kg and a radius of 1.10 m. (a) What is the
asked by jr 
Physics
Increasing the voltage across the two plates of a capacitor will produce what effect on the capacitor? a. increase charge b. decrease charge c. increase capacitance d. decrease capacitance how do i approach this one?
asked by Anthony 
Math
I have 5 books. Each book weighs 1 kilogram 250 grams. How much is the total weight?
asked by Jess 
Physics
Which process will double the power given off by a resistor? a. Doubling the current while doubling the resistance b. Doubling the current by making a resistance half as big c. Doubling the current by doubling the voltage d. Doubling the current while
asked by Anthony 
math
What is the greatest and least possible product you can make using the digits 1,3,5,6 and 7 in the multiplication problem below? Use each digit only once,
asked by Val 
Hum 111
Week Nine DQ 2 Post a 150 to 300word response to the following discussion question by clicking on Reply: Think of something you would like to persuade others to believe or agree with you. Which techniques should you use to present those ideas and
asked by Brandie 
english
thesis statement on jack the ripper
asked by courtney 
chemistry
The formation of nitroanalyine (an important intermediate in dyes, called ‘fast orange’) is formed from the reaction of orthonitrochlorobenzene (ONCB) and aqueous ammonia. (See Table 31 and Example 92.) The liquidphase reaction is firstorder in
asked by john 
math 5th grade
need to understand how to find the sum in simplest form of these common denominators 1/2 +1/10= ,5/12+1/4=,the difference in 2/31/6 =, 5/67/12=
asked by Anonymous 
math
jada baked 4 trays of cookies with a dozen on each tray. she and her brother ate 6 of the cookies while they were still warm. otis baked 4 trays of cookies . he started with one dozen on each tray then his mom removed 6 cookies from each tray to send to
asked by lily 
Physical Chemistry
Assuming that the osmotic pressure of a sample of sea water at 10 C is 25.5 atm, calculate the work required under reversible conditions at this constant temperature to prepare 9 litre of pure water from this sea water. (Take the available volume of sea
asked by Nicole 
haelth
A wellstocked firstaid kit should include which of the following items? A. A bottle of adult multivitamins B. Sterile gauze in assorted sizes C. A small knife to remove splinters D. Injectable steroids
asked by Anonymous 
SPANISH 10 B
I Don't Understand The Instructions Please Help>> INSTRUCTIONS: In this writing assessment, you are going to use vocabulary from this section to talk about your house. Answer the questions you see based on what you do with this item or where this item
asked by HELP?!?! 
Physics (simple electronics)
The electronic flash attachment for a camera contains a capacitor for storing the energy used to produce the flash. In one such unit, the potential difference between the plates of a 775 µF capacitor is 330 V. (a) Determine the energy that is used to
asked by Mike 
Physics Mehanics
In the figure below, wheel A of radius rA = 11 cm is coupled by belt B to wheel C of radius rC = 23 cm. The angular speed of wheel A is increased from rest at a constant rate of 1.6 rad/s2. Find the time needed for wheel C to reach an angular speed of 110
asked by D 
physics
A mass m = 0.225 kg on a frictionless table is attached to a hanging mass M = 0.330 kg by a cord through a hole in the table (see the figure). Find the speed with which m must move in order for M to stay at rest if r = 27 cm.
asked by Nic 
math
The jelly junior high school color is made by mixing red paint to yellow is 3 to 5, How much red paint should be mixed with 20 oz of yellow?
asked by ashle 
Science
I combine with two oxygen atoms to make sand. I have four valence electrons, Whar element am I?
asked by mary k. 
math
Which shows the proper coordinate notation for a rotation that is 180 degrees clockwise about the origin A. (3,6)>(6,3) B. (3,6)>(3,6) c. (3,6)>(6,3) D. (3,6)>(3,6) HELP please? Thanks
asked by Justine 
physics
A 748 N student stands in the middle of a frozen pond having a radius of 5.3 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 2.1 kg physics textbook
asked by Anonymous 
Physics
In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 93.0 km/h, to his enemy's car, which is going 130km/h. The enemy's car is 17.0m in front of the Indy's when he lets go of the grenade. 1)If Indy throws the
asked by Anonymous 
Physics
The force on a 0.80 m wire that is perpendicular to Earth's magnetic field is 0.12 N. What is the current in the wire?
asked by Crystal 
calculus
f(x)=12x/sinx+cosx find f(pie)
asked by Daniel 
Algebra
Complete the rectangle to illustrate the product. (x+8)(x+7)
asked by Shirley 
chemistry
a catalytic converter combines 2.25 g CO with excess O2 What mass of Co2 is formed
asked by Elaine 
calculus
The fee per ton of pollution is given by A(x) = F(x)=x. Write a piecewise de nition of A(x). What is the limit of A(x) as x approaches 4,000 tons? As x approaches 8,000 tons?
asked by rosie 
math
I have $6400 to invest at 8% and 6%. What amount is to be invested at 8% in order to earn double the interest of 6%
asked by joe 
chemistry
calculate the number of grams atom and gram molecules in 25.4milligrams of iodine ?
asked by larisque 
Chemistry
What is the pH of a solution that is 0.10 M CH3NH2 (methylamine) and 0.15 M methylammonium chloride?
asked by steve 
Chemistry
. What is the percent by mass of nitrogen in (NH4)2CO3? dont know how to do, please help.
asked by Hannah 
College Physics
In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 93.0 km/h, to his enemy's car, which is going 130km/h. The enemy's car is 17.0m in front of the Indy's when he lets go of the grenade. 1)If Indy throws the
asked by Anonymous 
Physics
A con of soda displaces 3.79 * 10^4 m^3 of water when completely submerged. Each 0.018 kg can contains 3.54 * 10^4 m^3. Compare the buoyant force on a can of diet soda of density 1001 kg/m^3 to the force on a can of regular soda of density 1060 kg/m^3.
asked by Kendra 
Cal
The circumference of a sphere was measured to be 86.000 cm with a possible error of 0.5 cm. Use linear approximation to estimate the maximum error in the calculated surface area and Estimate the relative error in the calculated surface area.
asked by Kong 
Physics
A block is released from rest at the top of an incline which makes a 30 degree angle with the horizontal. The incline is 12 m long and it takes the block 25 seconds to reach the bottom. What is the coefficient of kinetic friction, between the block and the
asked by Emily 
MATH
how many oneinch square tiles will he need to cover a surface that is 2ft by 3ft
asked by ALI 
college physics
Two cars of equal mass are traveling as shown in the figure below just before undergoing a collision. Before the collision, one of the cars has a speed of 19 m/s along +x, and the other has a speed of 31 m/s along +y. The cars lock bumpers and then slide
asked by lala 
physics
A 2940 kg demolition ball swings at the end of a 16.9 m cable on the arc of a vertical circle. At the lowest point of the swing, the ball is moving at a speed of 8.28 m/s. Determine the tension in the cable.
asked by thaokieu 
physcis
On a banked race track, the smallest circular path on which cars can move has a radius of 113 m, while the largest has a radius of 160 m, as the drawing illustrates. The height of the outer wall is 14.4 m. Find (a) the smallest and (b) the largest speed at
asked by john 
physics
A 15 kg crate is held with a rope at the top of a metal ramp that has an incline of 25(degrees) with the horizontal. The rope breaks and slides down the ramp a distance of 5.50 meters before it hits the floor. If the coefficient of friction between the
asked by taylor 
Physics
A ray of light is incident at an angle of 51.1 degrees on the surface of a piece of crown glass whose index of refraction is 1.52 degrees. What is the angle of refraction? Answer in units of .
asked by Maria 
Business Communications
Which of the following would be the MOST useful strategy for learning to communicate effectively with international employees working in your overseas divisions? a) Devote time to learning the rules for communicating with people from each of the countries
asked by Savannah 
physics
Uniform rod of weight 10N and length 5m is supported by ropes from points P and Q. The rope at P is attached 1.0m from end M and the rope at Q is attached 0.25m from end O. find the tensions Tp and Tq
asked by samuel 
physics
a rock is dropped from the top of diving platform into the swimming pool below. will the distance traveled by the rock in a 0.1 second interval near the top of the flights be the same as the distance covered in a 1.1 second interval just before it hits the
asked by jb 
physics
A block with mass 0.55 kg on a frictionless surface is attached to a spring with spring constant 39 N/m. The block is pulled from the equilibrium position and released. What is the period of the system? answer in seconds...
asked by caila 
Chemistry
What is the pH when 3.46 mL of 2.37 M KOH is added to 26.9 mL of a 1.78 M solution of formic acid (HCOOH)?
asked by sarah 
Websites
Could you give me links to websites that have accurate and good information, such as some univeristy websites that give out good homework information, etc.
asked by IknowUcare 
physics
Consider a 1kg mass at rest at the equator.Because of the earths rotation , the mass experiences a centripetal acceleration. a)Draw free body diagram of mass b)Find centripetal force acting in the mass c)Compare apparent weight and true weight d)what
asked by Sandra 
physics
A student applies an upward force of 56 N to a 5.6kg physics textbook. Find the book’s acceleration (positive for up, negative for down). answer in miles/seconds squared.
asked by sk 
Microbiology
People with Rhinovirus infections of the nose and throat have an 80fold increase in kinins and no increase in histamine. What do you expect for rhinoviral symptoms? What disease is caused by rhinoviruses?
asked by Stephanie 
Maths
Chris wants to put a concrete path and a fence around his rectangular garden. The concrete path will be 1 meter wide and the fence will go around the edge of the path. The garden itself measures 5 meters by 8 meters. A)Calculate the perimeter of the fence.
asked by Anonymous 
5th grade math
can you please explain &show me how to get these answers to common denominators,find the sum & difference,write in simplest form,7/103/5 =,2/31/6 =,5/67/12 =,5/12+1/4=,1/6+2/9=,5/8+1/2=,3/8+1/4= i'm really having a huge problem understanding this,it's
asked by Anonymous 
Math
Fred says "To find 6x8,I can use the facts for 5x4 and 1x4." Do you agree? Explain.
asked by Joe 
Physics
In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 93.0 km/h, to his enemy's car, which is going 130km/h. The enemy's car is 17.0m in front of the Indy's when he lets go of the grenade. 1)If Indy throws the
asked by Anonymous 
Math
we need to fence off a rectangular section of land in order to make some huge play pens. All four sides will be fenced and there will also be 2 parallel fence lines inside the perimeter in order to make 3 identical fields. If we have 2600 meters of
asked by Johnson 
algebra
translate into an inequality. use the variable X My salary next year will be at least $45000.
asked by John 
finance
company issuing $1,000 par value bond that pays 7% annual interest maturing in 15 yrs. Investors willing to pay $958 for bond. Flotation cost 11% of market value and tax rate 18%. What will be theaftertax cost of debt?
asked by kay 
Chemstry
Lovastatin (C24H36O5) has a molar mass of 404.53 g/m. The normal dose of the drug lovastain is 20mg. How many molecules of lovastatin (C24H36O5) are in a normal dose?
asked by Michelle 
Physics
Doubling the voltage across a parallel plate capacitor does not double which of the following? a. the charge b. the electric field between the plates c. the energy stored d. the electric force on the plates e. both a and b is the answer A if not then how
asked by Anthony 
Art Appreciation (college level)
Art 101 (Art Appreciation) textbook (Gardener's art through the ages) by Kleiner, F.S. 2010 The Western Perspective vol 11 (13th edition) Question: Discuss how the late Gothic sense can be seen as an evident in Berlinghieri's St. Francis Altarpiece.
asked by Anna 
math
What multiplication fact can be found by using the arrays for 2x9 and 5x9?
asked by Joe 
Microbiology
People with Rhinovirus infections of the nose and throat have an 80fold increase in kinins and no increase in histamine. What do you expect for rhinoviral symptoms? What disease is caused by rhinoviruses?
asked by Stephanie 
maths
A) Sam jogs 6 laps around a circular running track which has a radius of 30 meters. How far does she jog in total? B)Tom and Jerry decide to find the perimeter of their garden. Tom measures the length as 5.2 meters while Jerry measures the width as 370cm.
asked by Anonymous 
victoria Ci
We find an electric field of magnitude E = 1.2 x 107 V/m across a particular nerve membrane. The potential difference between the interior and exterior surface of the membrane is 65 mV. The thickness of the membrane is closest to
asked by Crystal 
physics
A ball is thrown straight upward and then returns to the earth. choosing the positive direction to be upward, sketch a graph of the velocity of this ball against time. where does the velocity change direction? Explain?
asked by jb 
science
A rifle bullet travels 5000 feet in 4 seconds. what is the speed of the bullet?
asked by Mary 
physics
It is the year 2305 and the tallest structure in the world has an insane height of 3.19×106 m above the surface of the Earth. A pendulum clock that keeps perfect time on the surface of the Earth is placed at the top of the tower. How long does the clock
asked by gino intili 
algebra
translate into an inequality. use the variable X My salary next year will be at least $45000.
asked by John 
Math
A cone and a square based pyramid have slant heights of 6 inches . The diameter for the cone and the base edge of the pyramid are both 8 inches. How would I find which space figure has the greater surface area
asked by Bailey 
physics
A man steps on his bathroom scale and obtains a reading of 243 lb. The spring in the scale is compressed by a displacement of 0.0480 inches. Calculate the value of its spring constant in (a) pounds per inch (b) newtons per meter.
asked by sk 
Algebra:Properties
3(f+4)+2f Rewrite this expression without parentheses
asked by Lauren 
Science
For million of years, wind and rain have worn down the earth. The land is not totally level now because ____. a. other forces keep building up the land b. wind and rain cannot erode solid rock c. for most of those years, wind and rain were scarce d. wind
asked by Emily 
Research Practicum
I'm conducting a research project on "to what extent are college students addicted to textbased college communication?" this is my survey I created. Is this a good survey? and how do I evaluate my responses from, let's say, 50 surveys to table data to
asked by Miguel 
math
is 2311 a prime or composite number?
asked by Anonymous 
college physics
Two cars of equal mass are traveling as shown in the figure below just before undergoing a collision. Before the collision, one of the cars has a speed of 19 m/s along +x, and the other has a speed of 31 m/s along +y. The cars lock bumpers and then slide
asked by lala 
Chemistry
The indicator Methyl Yellow changes from red to yellow over the pH range of 2.94.0. A second indicator, Bromcresol Purple., changes from yellow tored over the pH range of 5.4  6.8. You conduct an experiment in which a sample of HCl is titrated with NaOh,
asked by Catherine 
math 4th grade
each student brought in 9 cans to recycle. write an equation to represent the total number of cans (c)for any number of students(s)
asked by pat 
Chemistry
2NaHCO3(s)+ heat >Na2CO3(s)+ H2O(g)+CO2(g) is this right ? Determine how many moles of CO2(g) is produced when 7mols of NaHCO3 are consumed. question i asked earlier, i got 3.5 moles am i right ?
asked by Hannah 
physics
The velocity of a 2.5 kg block sliding down a frictionless inclined plane is found to be 1.58 m/s. 1.40 s later, it has a velocity of 7.32 m/s. What is the angle of the plane with respect to the horizontal (in degrees)?
asked by Nic 
foreign language
Hi there! I know two languages so far English and Russian. (I know the Russian language as well as I know English.) So, I was wondering about a third language to take at the college. I want to take a European language, but I cannot decide. Among my top
asked by Rita 
chemistry
A HOT CUP OF COFFEE HAS SOME SUGAR COMLETELY DISSOLVED IN IT. AFTER THE COFFEE HAS COOLED, SOME SUGAR APPEARS AT THE BOTTOM OF THE CUP. EXPLSIN WHAT HAS HAPPENED IN TERMS OF SATURATION.
asked by albert 
Maths
A)Sam jogs 6 laps around a circular running track which has a radius of 30 meters. How far does she jog in total? B)Tom and Jerry decide to find the perimeter of their garden. Tom measures the length as 5.2meters while Jerry measures the width as 37cm.
asked by Anonymous 
last question!!need help!!
f(x)=12x/sinx+cosx find f'(pie)
asked by Daniel 
grammar
A potluck dinner is when friends or neighbors bring food to share.
asked by Anonymous 
computers
What are contributing factors if you were in the market for commercial paper prior to a final purchase?
asked by Tanya 
biology
Explain that the energy needed to produce ATP comes from food during cellular respiration.
asked by lizzie 
3rd grade math
How do yu draw an array for the number 88
asked by Jim 
French
I am writing a narrative with that involves multiple verbs in the PC/l’imparfait within the same sentence. I suspect there are special procedures you follow when conjugating in this situation, but I don’t remember what. I remember something about using
asked by Eleanor 
math
(9x^4+0x^3+8x^2+17x20)÷(3x4)
asked by dc 
ENGLISH
Please read for errors and correct them. Thank you for your request for a credit card with our store. Before we can issue you a credit card, we must ask you to furnish the information on the enclosed credit application. When we receive it we will process
asked by Angel 
physics
A jet flying at 132 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, and the mass of the jet is 1.68 × 105 kg. Calculate the magnitude of the necessary lifting force.
asked by kelly 
Math
A tabletop is made of two layers of plywood. The top layer is .584 inch thick. The bottom layer is .258 inch thick. What is the total thickness of the tabletop?
asked by DestinyLashea 
Interpretation of fiction
I was wondering if anyone has read the novela "Aura" by Carlos Fuentes. If so I am writing a paper about what the purpose was for the use of magic in the story. I think that magic was used in order to seduce the main character Felipe. I think that the
asked by Hannah 
math
Tamara invests $30,000 in an account earning 7% interest per year over the next 4 years. How much (simple) interest will her investment earn in total?
asked by Anonymous 
math
Tierra, Nico, and Alex had $865 altogether. Tierra spent 2/5 of her money. Nico spent $40,and Alex spent twice as much as Tierra. If the three had the same amount of money left, how much money did alex have in the begging?
asked by julia 
MATH>>>>look.need.help.please.
what is the value of the expression (4.32 x 10^3) + (6.025 x 10^3) ? i came up with either 0.010345*10^3 or 10.345*10^3 and when i check them they're both wrong.
asked by angiie 
scientist
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard
asked by Annette 
maths
(Write the following expressions using numbers,parentheses and other mathematical symbols. You do not need to colculate the results) A)Double the sum of twentyfive and eight. B)The quotient of fifteen and three subtracted from the product of four and
asked by Anonymous 
chemistry
A HOT CUP OF COFFEE HAS SOME SUGAR COMLETELY DISSOLVED IN IT. AFTER THE COFFEE HAS COOLED, SOME SUGAR APPEARS AT THE BOTTOM OF THE CUP. EXPLSIN WHAT HAS HAPPENED IN TERMS OF SATURATION.
asked by albert 
Maths
A coffee urn holds 12 litres when full. Harry fills coffee cups from the urn until the coffee runs out. A)How many 140mls cups of coffee can be filled from the urn? B)At the end there is not enough coffee left to fill a cup, Harry decides to drink it
asked by Anonymous 
calculus
The fee per ton of pollution is given by A(x) = F(x)=x. Write a piecewise de nition of A(x). What is the limit of A(x) as x approaches 4,000 tons? As x approaches 8,000 tons?
asked by kelly 
physics
A 10 amp fuse is connected in series to 4 identical 5 ohm resistors in parallel with each other. What is the maximum size battery that could be connected without blowing the fuse?
asked by Crystal 
calculus
let f(x)=sqrt x+4. Calculate the difference quotient f(5+h)f(5)/h for h=.1 h=.01 h=.01 h=.1
asked by Katie 
Math
Lisa bought two equal pieces of fabric. She will cut squares for a quilt from the fabric. All together Lisa bought 5 yards 1 foot of fabric. What is the length of each piece of fabric?
asked by Jess 
math
Among the royalty of the land of Pirnza are Velve, Brint, Draz, Flard, and Sorn.In no particular order, their titles are Queen, Marquis, duke baron, and duchess. Their ages are 25,30,35,40 And 45.From the clues given try to determine the age and Title of
asked by Bill 
CALCULUS
Derivative of: (exp(8x^4))(5x^3+9)^3 ___________________________ (divided by) (22x^2+4x20)^2
asked by Skibba 
calculus
Given f(x) = x3, evaluate lim h>o f(a+h)f(a)/h
asked by rosie 
physics
A spring exerts a restoring force of 2.8 N to the right, in the positive xdirection. The spring constant is 7.3 N/m. Find the displacement of the end of the spring (with its sign). in meters??
asked by lpierce 
Math (Help This Will Be on My Test Tomorrow!)
y= ax^2+bx4. How would i find the equation of this parabola with the points (0,4) (1,0) (2,2) (4,0) and 6,10)?
asked by Ashley 
third grade hw help
Hello All, Please help my son with his Math fraction. He needs to put the below fractions in ordedr from least to greatest. 1) 2/4, 2/3, 2/7, 2/5 2) 1/2, 6/7, 5/7, 1/10 3) 1/2, 6/7, 1/12, 2/3, 11/12, 1/6, 1/3, 1/4, 4/5 Please help!!! Thanks.
asked by Kelly 
Algebra 2
write an equation in standard form for the ellipse with endpoints of the major axis (1,4) and (1,6)and endpoints of the major axisi at (4,1) and (6,1) i have no idea how to start this
asked by Lauren 
Algebra
In the graphing problem 3y=2x9 m=? b=? What do m and b stand for? How do I solve?
asked by Susan 
Good Thesis Statement?
Is this a good thesis statement? John Keats' odes and letters advance the Romantic literary movement through use of three common themes: living life to the fullest, overcoming hardships, and placing passion over reason.
asked by Norah 
THE AGE OF JEFFERSON TO THE AMERICAN EXPANSION
Which of the following was true of the Judiciary Act of 1801? A. It expanded the federal court system. B. It was opposed by the Federalists. C. It packed the Supreme Court with Democratic Republicans. D. It reduced the power of the federal courts.
asked by Anonymous 
English
Are news article summaries written in past or present tense? For Example: "The Author describes how the 4 year old boy works at construction sites" OR "The Author described how the 4 year old worked at construction sites" Thank you
asked by English 
Math
What is 23.56 divided by 1000 answer = 0.02356 23.56 x 1000 answer = 23560 can you show me how to work it out.
asked by DestinyLashea 
maths
Tamara invests $30,000 in an account earning 7% interest per year over the next 4 years. How much (simple) interest will her investment earn in total?
asked by Anonymous 
Statistics
Suppose that 92% of all SFSU students own a cell phone. Find the probability that 7 out of 10 random selected SFSU students own a cell phone
asked by Mitch 
Business Communications
Crystal agreed to serve on a company’s advisory board and now has to contact them to say she cannot attend a scheduled meeting where she was to be one of the several key speakers. What should she do? a) Let the company know she cannot attend and that
asked by Savannah 
math
can someone plzz tell me whichone is true. just but down the number when u answer back plzz & thank you 1. 14+(25)> 50= 2. 20*10^3 3. 3/4 + 3/4> 1 4. 6^2=2^6 5. 21(39)=60 6. 19 7. 11*11*11 = 33^3 8. 38
asked by tatiana 
trigonometry
Use logarithms and the law of tangents to solve the triangle ABC, given that a=21.46 ft, b=46.28 ft, and C=32°28'30" Also Give checks. I know the use of logarithms is unnecessary but i have to show my solution by using logarithms and that's the only
asked by Anon 
prealgebra
Graph the equation. Tell whether the equation is a function. y = x
asked by jazmin 
math
Create your own word problem that uses a system of equations to solve. Your problem must include the following words: beach,hammock,dance,and troll.
asked by Nick 
child day care management,health,safety,and nutrit
Q; introducing organized sporttts among young children is not recommended because A.this excludes the teacher or caregiver from a role in play B.they lack the necessary physical maturation needded C.they should be making their own rules D.they lack the
asked by alex 
chemistry
What is the chemical equation for the reaction of manganese metal with sulfuric acid to produce aqueous manganese (II) sulfate and hydrogen gas
asked by Anonymous 
Physics 2(Plz Help! :) :) ;))
A bullet leaving a rifle at an angle of 45 degrees travels a distance of 10 Km determine: A). The muzzle velocity B). What angle would you have to shoot the same bullet to go HALF the distance? Lower angle
asked by Jessica 
Chem
how many grams of NH3 are required to completely react with 40.0 grams of NO.
asked by Rachel 
Algebra
The Graph of F(x) = (x^2 2x 8)/(x+6) has which of the following ? a) point of discontinuity b) vertical asymptote c) both of the above d) neither of the above i guess a) not sure, can someone help me
asked by anonymous 
algebra 2
Add(1/12X^4+6/7X^3+3/8X^2+5)+ (7/12X^4+5/8X^25). "Please help me solve this"
asked by esther 
maths
Chris wants to put a concrete path and a fence around his rectangular garden. The concrete path will be 1 meter wide and the fence will go around the edge of the path.The garden itself measures 5 meters by 8 meters. A)calculate the perimeter of the fence
asked by Anonymous 
english
PLEASE CORRECT PUNCTUATION ONLY. THANK YOU! Re: Evans vs. Brown I tried to call you about the above case but learned that you were out of town, and will not return until Wednesday. You wrote to me on June 1 to ask what authority I had or could get to
asked by April 
Business Communication
Indicate the alternative that both correctly evaluates the following sentence and correctly explains the reason for the evaluation. “As soon as you provide your date of birth on Line 2, your application for a flexible spending account will be
asked by Hanna 
Accounting
Capital budgeting emphasizes the key role management has in value creation by taking projects and expanding the size of the firm if profitable. Do you agree or disagree with this statement? Why or why not?
asked by April 
English
Which word choices for each sentences should I use in parenthesis? The state legislature meets in the (Capital or Capitol). They are planning to (precede or proceed) with the construction. The professor will (precede or proceed) me on the program.
asked by April 
Acc
A crane with the mass of 500kg,lifting an object of the mass of 50kg, what wil be the gravitational potential energy of a crane?. I need the equation and the answear.
asked by Thapelo 
economics
An airline transportation consultant offers the CEO of BlueStar, a struggling new commercial airline company, the following advice concerning the airline's high operating costs in the current quarter: "You don't have enough aircraft to operate efficiently.
asked by annie 
math
corinne rolls two six sided number cubes with sides labeled 16. what is the probability that she rolls a 6 on both side
asked by Zakiyah 
subject mismatch
what wrong with this sentence The purpose of the microscope was invented to allow people to see tiny things.
asked by Anonymous 
chemistry
If 40.0 grams of water are produced when 30.0 grams of ethane is burned, what is the % yield
asked by misty 
American Government: HELP
I already did my part and got two other peoples opinions. Could you just give me one more opinion on this matter? Answer the following questions based on your knowledge of civil law and the above scenario. The answer for each question should be at least
asked by Cheryl 
science
I am researching on a butterfly named Holly Blue. I know they live in gardens and woodlands. I need help because I want to know what dangers they might face in a GARDEN that they need to avoid, what creatures they might encounter and what they can find in
asked by Blue 
Economics
If all the wealth in the world were distributed evenly, how much money would each person have? How would this affect the everyday lives of westerners? Thanks for your help. Any references would be appreciated.
asked by David 
ap chem
I'm supposed to find the mass of NaCl in 1 L & the mass of H20 in 1 L. I'm given NaCl solution. 1% by mass. The Density is 1.071 g/mL. I know the answer for NaCl is 10.71 g, but I don't know where to start to get to this. Could you lead me in the right
asked by dylan 
Math
Multiply eight and eightyeight hundredths by two and three tenths? can show the work please.
asked by DestinyLashea 
Interpretation of fiction
The novella Aura. My thesis statement for my paper is: The use of magic in this story serves for the purpose of seducing Felipe. Does this statement sound ok?
asked by Hannah 
physics
A spring with spring constant 21 N/m is stretched 0.35 m in the positive x direction, referring to the figure. What is the spring’s restoring force (with its sign)?
asked by bob 
math
A music store offers a prize to a computer who can guess the closest, the number of jelly beans that fill a litre jar on the counter. Estimate the number of jelly beans in the jar if 1 jelly bean is approximately 2cm long (h) by 1.5cm in diameter(d)
asked by Leah 
maths
In Newtopia, inflation runs at 15%. A home entertainment unit currently sells for $2000 A)How much would you expect it to cost in a year`s time? B) How much would you expect it to cost in two years time?
asked by Anonymous 
Computer
How to write an algorithm to find the fibonacci series ??? Help:/
asked by Nelly 
Statistics
Suppose that 92% of all SFSU students own a cell phone. Find the probability that 7 out of 10 random selected SFSU students own a cell phone. explain how answer was arrived
asked by Mitch 
Business Communication
The dean of students is announcing a reception for new nontraditional students. Which of the following is the BEST subject line? a) Nontraditional Students b) Reception to Welcome Nontraditional Students Who are Attending the University for the First Time
asked by Hanna 
college algebra (maths 112)
To conduct a new experiment, a scientist needs a 23% salt water solution. How much of a 13% solution must be mixed with 45 quarts of a 32% solution to get the proper solution?
asked by Anonymous 
English
What actions could the friar and nurse (from Romeo and Juliet) have taken in act 4 that would have changed the outcome?
asked by Isabel 
child day care management,health,safety,and nutrit
Q;Which of the following is an obstacle to learning for a beginning mover? A.knowledge of what elements of the movement to focus on B. chronic indifference characteristic between birth and age three. C.shorter time to monitor perceptual input from the
asked by alex 
math
find the lowest common multiple of 30,40 and 70? 8 118
asked by Anonymous 
statistics
If μ =10 and σ =4 for a distribution of sample mean, with n=16 for each mean, how far above the population mean (in %) is a sample mean score of 12
asked by Anonymous 
MATH Grade 12
How do you sketch an equation like x+4=2(y3)^2 ???
asked by Anonymous 
Physics
A moving object has a kinetic energy of 138 J and a momentum of 23.9 kg·m/s. a) Find the speed of the object. Answer in units of m/s.
asked by Maria 
world history
whan part of a country leaves or breaks off from the rest it is called?
asked by Anonymous 
Math
i have a piece of paper 22 in. long and 16 in. wide. i cut a 2 in. x 2 in. square from each corner. i then folds up the sides and forms a box with an open top. what is the volume of this box?
asked by Damien 
matching the subject
The purpose of the microscope was invented to allow people to see tiny things.
asked by Anonymous 
Physics(I Have No Idea!!) :)
A ball is thrown at 30 m/s horizontally off a building. it lands 100 meters from the base of the building. How high is the building?
asked by Jessica 
physics
When the end of a spring is displaced from its rest position by 8.5 cm, the spring’s restoring force has a magnitude of 4.4 N. What is the spring constant? in N/m??
asked by gino intili 
CHEMISTRY
How to determine the molarity of a 1.8% NaCl solution.
asked by BILL 
Science
Which of these would cause a rapid change in the appearance of the Earth's surface? A. Erosion and deposition by a river B. Earthquake C. Summer waves on Galveston's beach D. Weathering of rocks by acid rain
asked by Nicole 
English
1) Can you tell me if the word "counter of frozen food, frozen food counter" can be replaced by "freeze counter"? 2) Go through the arcades as far as the baker's. At the baker's turn left into Piccadilly Street. 3) Cross the road on the zebra crossing./ Go
asked by Mike 
Math
1.16 divided by 6.148? i got the answer, I need help working it out.
asked by DestinyLashea 
physics
A mass is given an initial velocity up a frictionless 28 deg. incline and reaches a vertical hight of 1.35m. What was the initial velocity?
asked by Elmer 
English
Can you please check these sentences for me, please? Thank you very much. 1)The avenger is involved in complex planning. 2) A lot of murders occur within the play. 3) The hero becomes more and more isolated throughout the play (better: within the play, as
asked by Mike 
Algebra 2
A company charges 16$ for a subscription. It has 30,000 subscribers. It looses 1,000 subscribers for every 1$ they raise the price. 1.Find the quadratic quation. (Can you tell me how to pull the numbers out of the question and put it into the equation?)
asked by Anon 
maths
In Newtopia, inflation runs at 15%. A home entertainment unit currently sells for $2000. A) How much would you expect it to cost in a year`s time? B) How much would you expect it to cost in two years time?
asked by Anonymous 
math
Tierra, Nico, and Alex had $865 altogether. Tierra spent 2/5 of her money. Nico spent $40,and Alex spent twice as much as Tierra. If the three had the same amount of money left, how much money did alex have in the begging?
asked by julia 
Calculus
I'm supposed to find the volume of this, I've tried it multiple times. I can't seem to get one of the possible answers. y=x+2, y=16x^2, x=2, x=2 A. 50.67 B. 51.67 C. 8.44 D. 16.89 E. 101.33 F. 152 Thanks for any input!
asked by Devin 
Chemistry
You are titrating 35.00 mL of a 1.20 M solution of HCOOH with a strong base. If you add 1.00 mL of a 3.60 M solution of sodium hydroxide, what is the final pH of the acid solution? The Ka for HCOOH is 1.8 X 104.
asked by Carl 
maths
A coffee urn holds 12 litres when full. Harry fills coffee cups from the urn until the coffee runs out. A)How many 140ml cups of coffee can be filled from the urn? B)At the end there is not enough coffee left to fill a cup, Harry decides to drink it
asked by Anonymous 
Math
If you have 3 graphs plotted on the same page and can't tell just by looking at them which one is linear (they all have a slight curve and some linear features), how do you use the yintercepts to determine this?
asked by Sara 
marketing
If you are using the Internet and Web resources for a business publication, under which conditions is it not necessary to include a citation?
asked by Alethea 
Math
The volume of the box is the number of cubes it would take to fill it up. If each is a centimeter on the edges, the volume would be given in cubic centimeters. what is the volume of the 4 cm x 4 cm x6 cm box?
asked by Anonymous 
acc250
Please post your response to the following: Chapter 5 discusses internal control. Why are internal controls and audit trails important in a computerized accounting system?
asked by PrincessBunny 
Trigonometry (Logarthims)
Give checks to the following two questions Use logarithms and the law of tangents to solve the triangle ABC, given that a=21.46 ft, b=46.28 ft, and C=32°28'30" without logarithms i can do this problem easily and i have. but when i try solving it with
asked by Anon 
Economics
If all the wealth in the world were distributed evenly, how much money would each person have? How would this affect the everyday lives of westerners? Thanks for your help. Any references would be appreciated.
asked by David 
3rd grade math hw help!
Hell All, Please help my son with his Math fraction. He needs to put the below fractions in ordedr from least to greatest. 1) 2/4, 2/3, 2/7, 2/5 2) 1/2, 6/7, 5/7, 1/10 3) 1/2, 6/7, 1/12, 2/3, 11/12, 1/6, 1/3, 1/4, 4/5 Please help!!! Thanks.
asked by Kelly 
physics
It is the year 2305 and the tallest structure in the world has an insane height of 3.19×106 m above the surface of the Earth. A pendulum clock that keeps perfect time on the surface of the Earth is placed at the top of the tower. How long does the clock
asked by caila 
Civics
What are some common goals a society would have?
asked by ted 
math
the loan amount $750.00 @ 6% rate for 135 days. what would the interest be.
asked by cathy 
geometry
find the equation to the plane through the point (1,3,2) and perpendicular to the plane (x+2y+2z=5) and (3x+3y+2z=8)
asked by anil 
chemistry
To make 10 mL of 25 mM sodium standard, what volume of 1 M NaCl stock should be used? 250 mL 2.5 mL 0.25 mL 0.5 mL None of these 400 mL
asked by vivek 
English
Cn you please help me with these sentences, please? Thank you very much in advance. 1) Do you mind if I change channel to the football match? 2) If there is an earthquake and I'm inside a building, I'll get (or I ge) under a table or desk. 3) If I'm out of
asked by Mike 
the world history
Does any one have the question to exams007681007682
asked by Peggy 
6th earth science
Can anyone help with this question If Earth's land features made by process of moving water are likely to be found on other celestial objects? I am trying to help my son but not sure I am understanding the question right myself.
asked by Teresa 
math
what fraction is not equivalent 3/10,9/30,27/90,36/180
asked by roger 
Math
An open box with a square base is to bemade to organize items in the trunk of a car. It is planned to use an area of 16m square of flexible plastic forthis box. What are the dimensions of the box for max volume?
asked by dd 
Compliments
Hey, Im trying to find lots of compliments. For example, if someone makes a really nice drawing or whatever, and enhances it with their own techniques and stuff, what comments could I give to them? Here is my list: *Very creative work *Like the blend and
asked by Rebecca 
chemistry
if 50 grams of a substance with temperature of 20 degrees C and a specific heat of 2 is mixed with 200 grams of water at 40 degrees C, what will be the equilibrium temperature of the mixture?
asked by kassi 
Math
do adult men go out to dinner alone more than adult women and what is the percentage of men versus women women dine alone?
asked by Dave 
Math
The bases of a rectangular prism are squares whose perimeters are 36 inches. If the height of the prism is 8 inches, what is the surface are of the prism?
asked by Alex 
English Now
Correct any errors found.Thank you! Thank you for your request for a credit card with our store. Before we can issue you a credit card, we must ask you to furnish the information on the enclosed credit application. When we receive it we will process your
asked by angela 
english
Which is the most effective coordinating conjunction to join the following independant clauses? The wheather forecast calls for more rain today. We will have to cancle our beach outing
asked by Anonymous 
trigonometry
Can you please show me the steps: Derive the identity for sin 3x in terms of sin x.
asked by anon 
math
is 3+(3) less than or greater than 6
asked by zac 
Physics 2
A 0.564kg basketball is dropped out of a window that is 5.85 m above the ground. The ball is caught by a person whose hands are 1.89 m above the ground. (a) How much work is done on the ball by its weight? What is the gravitational potential energy of the
asked by Tiffany 
math
is 7 less or greater then 1(10)? PLZZZ HELP IM HAVING A TEST ON THIS
asked by jeni 
algebra
is 4 a solution of the inequality? x≥ 4
asked by Carly 
calculus
Please help with this. I need the first derivative of f(x)=4(x+squareroot (x(8x)) and then the second derivative of this to show by the second derivative test that it is a local maximum. This is difficult to put into form here and I hope I have got it
asked by Frank 
Please HelpEnglish
Proofread for spelling Capilization, commas error,any other mistakes, and correct them for me. To all ABC Internet Customers we have resolved the problem we were having with the Internet backbone for Southern Illinois. There was an NAP connection that was
asked by Angela 
Maths
A farmer needs to spread fertiliser over a paddock measuring 40m by 8m. the instructions on the fertiliser bag say to use 80grams per square meter. How many kilograms of fertiliser will be needed? HELP!
asked by Anonymous 
calculus
f(x)=12x/sinx+cosx find f'(pie) anyone know the answer!!! need help!
asked by Daniel 
Business Communication
Many companies have found that familyfriendly policies: a) are good recruiting tools, but often result in relocation failures. b) are one of the six leading reasons that new managers fail. c) have given employees with children higher overall compensation
asked by Hanna 
calculus
Given f(x) = x^3, evaluate lim h>o f(a+h)f(a)/h
asked by kelly 
cal
Let f(x)=5e^(x+1)+e^8 . find f'(0)
asked by Kong 
Physics
Suppose the Earth was only half the size it is now (half the mass and half the radius), what would "g" be?
asked by Paige 
math
f(x)=2e^(xcosx) f'(x)=?
asked by wkp 
math
how to write an addition sentence to get the answer as 25
asked by Jim 
Chemistry
chemist relate units of counting, of mass, and of volume to a single quanity called the _____.
asked by Chanice 
social studies
the general term for a variety of groups who attacked roman towns
asked by joseph 
math
How do you make this decimal 0.85 in simmpleiest form? And what will be the new number?
asked by olivia 
Math
A farmer buys two varieties of animal feed. Type A contains ounces of oats and ounces of corn per pound. Type B contains ounces of oats and ounces of corn per pound. The farmer wants to combine the two feeds so that the resulting mixture has at least
asked by Shell 
geometry
Find the area of triangle ABC with A = ((5), 1), B = ((8), 1), and C = (9, (8)). Graph the triangle on your own graph paper. Do not include units.
asked by callie 
chemistry
To make 10 mL of 25 mM sodium standard, what volume of 1 M NaCl stock should be used? 250 mL 2.5 mL 0.25 mL 0.5 mL None of these 400 mL
asked by vivek 
chemistry
The label of a spread says that it contains, per 100 g product: 80 g fat; 20 g saturated fat. What is the percentage of saturated fatty acids expected in the fat extracted from this spread? 25% 80% none of these 20% 16%
asked by vivek 
English
Add it How are these words alike? add more. made,play,train...
asked by Jessica 
math
show why two thirds of 9 and one third of 18 name the same number.use counters or draw a picture to explain your reasoning.
asked by kyle 
chemistry
What is the molarity of the following solutions? (a) 2.1 mol KCl in 1.7 L of solution 1 M (b) 1.04 mol H2SO4 in 335 mL of solution 2 M (c) 0.944 mol of ammonia in 215 mL of solution 3 M
asked by Bobby 
English
If I wanted to sayThis is Jos's backpack. Would the comma go between the s's as I have included, or would there just be a comma after the s?
asked by Lily 
business
What is customer focus?
asked by Anonymous 
Excel
Like obtaining the sum of squares in an area in Excel =sumsq(a1:g1) I would like an algorithm/module that will give me the sum of cubes. Can anyone help me? thankyouuuuuuuuuuu!
asked by John 
math
how doo i do my my math homeeework:congruence problems.
asked by ashley 
math
using common denominators find the sum or difference.write it in simplest form 1/2 +1/10=
asked by Anonymous 
Science
What Element am I? My properties are very similiar to sodium. I am lighter than the element that has an atomic number one less than mine.
asked by mary k. 
grade5
5 devices of energy in your home. please tell me. whats the largest source of power in the whole toronto. please help me i`m confused. i cant find good websites.
asked by science 
History
A policy on how to handle things within a state or country What is it?
asked by macy 
math/algebra
If n=4 what does 3x+5=
asked by sky 
math
is 10^2 less thans or greater than 200?
asked by zac 
maths
In Newtopia, inflation runs at 15%. A home entertainment unit currently sells for $2000. A)How much would you expect it to cost in a year`s time? B)How much would you expect it to cost in two year`s time?
asked by Anonymous 
S.P
Tamara invests $30,000 in an account earning 7% interest per year over the next 4 years. How much (simple) interest will her investment earn in total? Please help!!! :)
asked by Anonymous 
algebra 2
Divide. x^2+5x26,x+7 Thank you.
asked by esther 
algebra
from a base elevation of 9600 ft, a mountain peak in colorado rises to a summit elevation of 14,307 ft over the horizontal distance of 15,850 ft, what is the grade of the peak?
asked by laura 
english
PLEASE CORRECT PUNCTUATION ERRORS ONLY. THANK YOU! Re: Johnson vs. Ralston We have received medical information from Midvale Clinic, and copies of all the documents we received are enclosed. We received nothing from Dr. Best, and the only items we received
asked by April 
algebra 2
Divide and check. Write your answer using none negative exponents. 40x^2y^2/5x^4y^2. Thank you.
asked by esther 
maths
A circular pool has a diameter of 3m and is filled to a depth of 70cm. Mr Thorne climbs into the pool and submerges for ten seconds while his son measures the new depth of 72cm. calculate Mr Thorpes volume.
asked by Anonymous 
physics
A+(NOT A)B=? {BOOLEAN ALGEBRA)
asked by vera 
writing
which is the adjective in the sentence. Our house is built from wood. can any help, by the way if theres no adjective its fine but i want ot make sure if there is or not
asked by Jazmin 
math
how to write an addition sentence to get the answer as 25
asked by Jim 
social studies
specific group that plundered rome. 5 letters.
asked by joseph 
Accounting
Give an example of an existing cost center. Why is it a cost center? Explain.
asked by April 
physics
A+(NOT A)B=A+B How do you get A+B as the answer
asked by vera 
Geometry
Are perpendicular lines the same as intersecting lines?
asked by Catherine 
com 155
Last night I watched a movied called I Spit on your grave. The movie is about a young woman from the city !@#$%^&nts out a cabin in the country to write a book. While traveling up to the cabin she meets a group of gas station attendees who give her
asked by sheras 
CRIMINOLOGY
What types of social conflict exist in American culture today? Are they productive conflicts, producing results for those who need help?
asked by bianca 
child day care management,health,safety,and nutrit
Q;a plant in a classroom appears to be wilting.The children are asked to come up with as many possible explination for this as they can.They'r engaged in second stage of decision making,called A.groupthink B.herding ideas C.railroading ideas
asked by alex 
math
randy pedals his bicycle at a constant rate of 15 feet per second. which linear equation represent his total distance traveled y after x seconds?
asked by jason 
math
(3x5)(2x 8) 5x^2+3
asked by pavleen 
calculus
Sketch the graph of F(x).
asked by rosie 
Algebra
Where is the axis of symmetry of a parabola located?
asked by Anonymous 
Math 30
How do you sketch an equation like x+4=2(y3)^2
asked by Anonymous 
Math
Every day for 11 days, Tylia saw 23 sport cars pass her bedroom window. Write a numerical expression to describe how many sports cars she saw in all. Rewrite the expression using the Distributive Property so that you can mentally calculate how many sports
asked by gabi 
SCI/230
please help CheckPoint: Basic Processes Due Day4 (Assignment Tab) • Select one basic physiological process from the following list: o Acquire and process nutrients o Get rid of waste o Reproduction o Obtain information about and respond to external
asked by Anonymous 
CRIMINOLOGY
what are some social conflicts with the death penalty?
asked by bianca 
Math
Let f(x^2/3). Find f(S) if S = {1,5,7,11}.
asked by Francesca 
mat117
Describe the mathematic process of canceling like factors when working with rational expressions. Demonstrate this with an example
asked by judyanne 
Algebra 2
Divide. x^2+5x26,x+7 Thank you.
asked by Esther 
equivalnet fractions
what are two equivalent fractions for 5/15?
asked by Anonymous 
ENGLISH
Please Check for any errors I wish to compliment you on the radio ad you presented to the committee yesterday. This ad will be a fine complement to our advertising campaign for Wiz our new product. By the time, we have our next meeting you may be able to
asked by sally 
earth
Can someone give me a better idea of Precipitation Variability ? and the 4 types of atmospheric lifting, I'm confused and want to understand this better. Convective Lifting Orographic Lifting Frontal Lifting Convergent Lifting
asked by Rae 
english
Please Correct punctuation errors, only. Thank you! Subject: Policy 27380 Your insurance program, Policy 27380 is enclosed. We advise you to add this valuable document to your other important papers. Please review your certificate carefully. If you have
asked by April 
Chinese
what does washa washa mean
asked by yoyo 
maths
A farmer needs to spread fertiliser over a paddock measuring 40m by 80m. The instuctions on the fertiliser bag say to use 80grams per square meter. How many kilograms of fertiliser will be needed?
asked by Anonymous 
maths
A circular pool has a diameter of 3m and is filled to a depth of 70cm. Mr Thorne climbs into the pool and submerges for ten seconds while his son measures the new depth at 72cm. Calculate Mr Thorpes volume.
asked by Anonymous 
Calc
limit as h approaches 0 : ((23.1^(6+h))(23.1^6)) all that divided by (h)
asked by Skibba 
phsics
at what speed would a car need to hit and knock down a metal 7 ft. lampost on a grass surface with a plastic bumber about a foot off the ground, and what damage would be done to the car
asked by fran 
algebra 2
Add(1/12X^4+6/7X^3+3/8X^2+5)+ (7/12X^4+5/8X^25). "Please help me solve this"
asked by esther 
MAth
Can you tell me if the fv function or the pmt functionn use to find the interest rate. I think it is the pmt. Am I right or wrong.
asked by Renea 
math
f(x)=sin(e^(4x)) f'(x)=??
asked by timothy 
English
Can you check these sentences for me please? Thank you very much. 1) He doubts about suicide (wrong) He is doubtful about /he has doubts about suicide. 2) A period of doubt follows, in which (not when?) the hero plans his revenge. 3) Every man is scared:
asked by Mike 
Calc
Derivative of: (exp(8x^4))(5x^3+9)^3 ___________________________ (divided by) (22x^2+4x20)^2
asked by Skibba 
Child Care Mangment
An apprpriate science activity for a child 6 to 12 years of age is: A. collecting leaves. B.using a compass to find specific sites. C.growing plants froom seeds. D. experimenting with magnet. Thanks
asked by diana 
Science
Whats a molecule?
asked by Alex 
social studies
why did the south see president lincoln as anenemy?
asked by Anonymous 
math
multiply the two binomial below (2x3)(2x+3) the answer is 4x^2+9 is this correct
asked by pavleen 
Science(Please Help it's on my TEST!!)
What angle would a projectile have to be shot at so that it will go twice as high as it will far
asked by Samuel 
science
i need a science fair project that will last more than a week
asked by pavleen 
maths
this is urgent y=1/2x  1 if x equals 4 what does why equal? please help
asked by chloe 
physics
how do i find the amount of work done when given mass and speed?
asked by Anonymous 
Chemistry
What is the balance equation for: (NH4)3 + MgCl2
asked by Adrionna 
Physical Science
a car has an acceleration of 4 m/s squared. What will the increase in it's velocity be after 2 seconds? If it started with a velocity of 30 m/s, what is its final velocity?
asked by Des 
Chemistry
Is there a reason for why you're allowed only three significant figures for molar masses?
asked by Chem101 
Math
Write 1.87 as a mix number
asked by Chris 
Algebra 2
Add(1/12X^4+6/7X^3+3/8X^2+5)+ (7/12X^4+5/8X^25). Thank you so much for your help.
asked by Esther 
comsumer math
victoria has a total of twentyfour nickles and quarters. she has ten more quarters than nickles.how much money does she have?
asked by tinA 
Algebra 2
1/16x^4 +3/8x^3 +1/8x^2+1)+ (9/16x^4 +7/8x^2 1) I had previously made a mistake in the first set of problems in the last numbers. instead of +1, I had 1. I apologize for the confusion. Thank you.
asked by Esther 
Science/Maths
I don't know where to start with it? A tube is set up for radioimmunoassay containing antibody with a capacity for binding 1ug antigen. Both labelled (50,000 counts per ug) and unlabelled antigen are added to the tube. Work out a formula to calculate the
asked by Isa 
Science(Please Help it's on my TEST!!)
What angle would a projectile have to be shot at so that it will go twice as high as it will far
asked by Samuel 
English
Please find errors and correct them. To all ABC Internet Customers we have resolved the problem we were having with the Internet backbone for Southern Illinois. There was an NAP connection that was having trouble in Atlanta, Georgia. This is been resolved.
asked by Jay 
math/algebra
52+3=
asked by Sky 
FRENCHSra and Frenchy
Could you please give me some notes on the Prepositions. De + A.
asked by Anonymous 
math/algebra
8*2 divided by 4=
asked by Sky 
french
please unscramble this word.. the word is eeienhtocasr
asked by ben 
english
What are some product that are essential to your quality of life besides cell phones and ipod
asked by kate 
social studies
what was the name of a hired soldier
asked by joseph 
math
f(x)=12x/sinx+cosx find f'(pie) need help!! anyone know the answer!!
asked by Daniel 
social studies
type of art made from tiny pieces of stone
asked by joseph 
health
i need a critical thinking question about bulimia for my psych class.
asked by Sarah 
English
What actions could the friar and nurse (from Romeo and Juliet) have taken in act 4 that would have changed the outcome?
asked by Isabel 
math
If the base to a gutter and 12 feet from the base of a house, how many feet high on the house does the ladder reachIf th
asked by mark 
math
use integration by parts to prove the following reduction formula: cos^nx dx =1/n cos^(n1)xsinx +(n1)/n cos(n2)xdx
asked by daniel 
physics
A spring with spring constant 26 N/m is stretched 0.29 m in the positive x direction, referring to the figure. What is the spring’s restoring force (with its sign)? in newtons?
asked by morgan 
french
can you unscamble eeienhtocasr
asked by ben 
math/algebra
5(2+3)=
asked by Sky 
math/algebra
9(3)+4=
asked by Sky 
math/algebra
9(3+4)=
asked by Sky 
math
3/8 less or gereater than 1
asked by zac 
need some help!!!
f(x)=12x/sinx+cosx find f'(pie) anybody know the answer!!!
asked by Daniel 
Calculus(derivatives)
f(x)=7cosx+6tanx, find f'(x)and f'(5pie/4)
asked by Daniel 
Algebra 2
Add(1/12X^4+6/7X^3+3/8X^2+5)+ (7/12X^4+5/8X^25). "Please help me solve this"
asked by esther 
Math
How do you multiply monomials without an exponent as one of the numnbers? The problem is 1 to the 4th times 1.
asked by Mary 
science
How to determine the molarity of a 1.8% NaCl solution.
asked by bill 
vareiables
can you help me because i need a good science fair project
asked by jose 
managerial economics
draw me an indifference curve where someone does not value integrity very much compared to income
asked by david 
math
3a^2b + 6a^2b 9a^4b^2
asked by pavleen 
science 5
ts the est source of power in toronto please tell me i need help
asked by saira 
Science(Please Help it's on my TEST!!)
What angle would a projectile have to be shot at so that it will go twice as high as it will far
asked by Samuel 
social studies
what is an arch that forms a celling or roof
asked by joseph 
math
f(x)=x*x+7x10
asked by Alemnesh