Friday
July 11, 2014

Search: what do you get if you drop a grand piano down a mine shaft? pg.168

Number of results: 1,634

physics
Through a pipe of diameter 16cm, water is pumped from the Colorado River up to Grand Canyon Village, on the rim of the canyon. The river is at 564m elevation and the village is at 2096m elevation. a) At what minimum pressure must the water be pumped to arrive at the village? ...
December 29, 2010 by sam

physics
To test the quality of a tennis ball, you drop it onto the floor from a height of 4.31 m. It rebounds to a height of 2.51 m. If the ball is in contact with the floor for 12.6 ms, what is its average acceleration during that contact?
September 12, 2013 by kristy

physics
To test the quality of a tennis ball, you drop it onto the floor from a height of 4.31 m. It rebounds to a height of 2.51 m. If the ball is in contact with the floor for 12.6 ms, what is its average acceleration during that contact?
September 12, 2013 by kristy

Physics plz help
(a) What is the energy of a pendulum (L = 0.9 m, m = 0.4 kg) oscillating with an amplitude of 4.3 cm? (b) The pendulum's energy loss (due to damping) is replaced in a clock by allowing a 2.3-kg mass to drop 1.0 m in 1 week. What percentage of the pendulum's energy is lost ...
June 25, 2012 by Ally

law
You are interested in buying a new car and Bob let's you borrow one of the new cars on his lot for a week to test drive. You decide you like the car and when you visit Bob to drop off the car, he hands you the following document and a pen:
May 11, 2012 by Anonymous

physics
A 2 kg mass resting on a smooth plane inclined 20 degrees to the horizontal. A cord which is parallel to the plane passes over a massless, frictionless pulley to a 4 kg mass which will drop vertically when released. What will be the speed of the 4 kg mass 4 seconds after it is...
February 19, 2014 by Aim Senallagam

Math Probability
A math class has 20 students who choose a topic from a list for an essay. How big pool is necessary for the probability of at least one duplicate to drop below fifty percent? I understand it is like the birthday problem, I just do not understand how to solve it still.
February 9, 2012 by Matt

Physics
If you simultaneously drop a pair of tennis balls from the top of a building, they strike the ground at the same time. If one of the tennis balls is filled with lead pellets, will it fall faster and hit the ground first? Which of the two will encounter more air resistance?
September 15, 2013 by PLEASE HELP ME

Chemistry- Le chatelier's Principle
HOw would you predict the colour change or changes in number of states for the following: To a solution of 5 drops of 0.3 M K2CrO4 ans 2 drops of 0.3M NaOH add a drop at a time 0.1 M Ba(NO3)2 until a change is noticed. Given: BaCrO4(s) ---> Ba2+ + CrO42- 2CrO42-+2H+ --->...
March 4, 2009 by meme

Physics
In order to open the clam it catches, a seagull will drop the clam repeatedly onto a hard surface from high in the air until the shell cracks. If a seagull flies to a height of 28.7 m, how long will the clam take to fall? The accelera- tion of gravity is 9.8 m/s2 . Answer in ...
October 16, 2011 by asdfghjkl

p
A roller coater has a first drop of 140 meters and then enters a circular loop. Find the maximum radius of the loop such that the coaster never leaves the track at the top of the loop. Using the radius found in part 1, calculate the largest centripetal acceleration experienced...
April 9, 2012 by Mary

Physics
In order to open tha clam it catches, a seagull will drop the clam repeatedly onto a hard surface from high in the air until the shell cracks. if a seagull flies to a height of 16.4m, how long will the clam take to fall? The acceleration of gravity is 9.8m/s². Answer in units ...
September 16, 2012 by Linda

Physics
In order to open tha clam it catches, a seagull will drop the clam repeatedly onto a hard surface from high in the air until the shell cracks. if a seagull flies to a height of 16.4m, how long will the clam take to fall? The acceleration of gravity is 9.8m/s². Answer in units ...
September 16, 2012 by Linda

physics
Water of density 1000 kg/m3 falls without splashing at a rate of 0.241 L/s from a height of 81.3 m into a 0.638 kg bucket on a scale. If the bucket is originally empty, what does the scale read 2.06 seconds after the first drop contacts the bucket? The acceleration due to ...
February 6, 2014 by Anonymous

physics
You drop a ball from a height of 2.8 m, and it bounces back to a height of 1.0 m. (Ignore air resistance.) (a) What fraction of its initial energy is lost during the bounce? b) What is the ball's speed just as it leaves the ground after the bounce? (c) Where did the energy go?
October 12, 2009 by mike

Physics
A rocket-powered hockey puck has a thrust of 2.40 and a total mass of 1.40 . It is released from rest on a frictionless table, 2.90 from the edge of a 1.80 drop. The front of the rocket is pointed directly toward the edge. How far from the table does the puck land?
March 15, 2011 by Dan

PHYSICS
You drop a ball from a height of 2.8 m, and it bounces back to a height of 1.4 m. (Ignore air resistance.) (a) What fraction of its initial energy is lost during the bounce? (b) What is the ball's speed just as it leaves the ground after the bounce? m/s (c) Where did the ...
February 10, 2013 by ryan

Math
1. The base of an isosceles triangle is 14 cm in length and the angle opposite the base measures 86 degrees. Find the length of each of the congruent sides. 2. A ski slope has a 42 degrees incline and 170 yard long. Find the vertical drop.
February 4, 2014 by Tsunayoshi

physics
As a science project, you drop a watermelon off the top of the Empire State Building, 320 m above the sidewalk. It so happens that Superman flies by at the instant you release the watermelon. Superman is headed straight down with a speed of 36.0 m/s. How fast is the watermelon...
July 25, 2008 by elizabeth

chem
You are asked to bring the pH of 0.500L of 0.450M NH4Cl to 7.00. a) Which of the following solutions would you use: 10.0M HCl or 10.0M NH3? I figured that one would use the 10.0M NH3 b)How many drops (1 drop 0.05mL) of this solution would you use?
April 22, 2009 by tomi

chem
You are asked to bring the pH of 0.500L of 0.450M NH4Cl to 7.00. a) Which of the following solutions would you use: 10.0M HCl or 10.0M NH3? I figured that one would use the 10.0M NH3 b)How many drops (1 drop 0.05mL) of this solution would you use?
April 23, 2009 by tomi

physics
What is the pressure gradient (the drop of pressure per length unit) in a blood vessel with a volume flow rate of ΔV/Δt = 54 cm3/s and an inner diameter of 7 mm. Hint: the viscosity coefficient of blood in the specific case we study is ηblood= 2.7 x 10-3 Ns/m2
December 2, 2009 by hilary

Physics- Exercise 10
A 500kg pig is standing at the top of a muddy hill on a rainy day. the hill is 100.0m long with a vertical drop of 30.0m. the pig slips and begins to slidedown the hill. What is the pig's speed at the bottom of the hill? Use the Law of conservation of Energy.
February 3, 2011 by Marissa

Chem
Help! I'm not suppose to react Iron Chloride with Silver Nitrate in order to get Iron nitrate. If i'm suppose to keep one of the above ingredients and obtain a pure dry sample, what should i do? I don't know the question. Why are you not supposed to react the two? and which ...
September 8, 2006 by kelly

science
Sasha wants to find the resistance of the motor. She measured a 6 V drop across the motor that is in a series circut with a 200 ohms reseistor. The power source is supplying 9 V to the circut. How musch resistance is her motor putting into the circut?
February 18, 2008 by Clover

english
Connect each pair of sentences in two of the following ways: (a)join thm with semicolon or colon, (b)join them with a coordinating conjuction, (c)reduce one to a phrase or dependent clase, or(d)integrate one clause into the other. Sentences: 1. ur national parks offer a ...
June 8, 2009 by brittany

Physics - Another Question
"An airplane if flying level at 80.0m above the ground with a speed of 350km/h. The bombardier wishes to drop food and medical supplies to hit a target on the ground. At what horizontal distance from the target should the bombardier release the supplies?"
July 7, 2010 by Stuck

physics
A rocket-powered hockey puck has a thrust of 4.70 N and a total mass of 2.40 kg. It is released from rest on a frictionless table, 4.80 m from the edge of a 3.00 m drop. The front of the rocket is pointed directly toward the edge. How far does the puck land from the base of ...
November 10, 2010 by yeah

Chemistry
Liquid Chromatography lab: Why is it important that the solvent level not drop below the upper level of the stationary phase once the stationary phase is packed in the column. is it because if the stationary phase dries out, then the mixture will be permanently absorbed
April 13, 2008 by Matt

alg
suppose you drop a tennis ball from a height of 15 feet. After the ball hits the floor, it rebounds to 85% of its previous height. How high will the ball rebound after its third bounce. round to the nearest tenth.. my teacher told be the answers 9.2 but i dont know how she got it
June 9, 2008 by jerson

alg2
suppose you drop a tennis ball from a height of 15 feet. After the ball hits the floor, it rebounds to 85% of its previous height. How high will the ball rebound after its third bounce. round to the nearest tenth.. my teacher told be the answers 9.2 but i dont know how she got...
June 9, 2008 by jerson

physics
An Atwood's machine consists of blocks of masses m1 = 13.0 kg and m2 = 19.0 kg attached by a cord running over a pulley as in the figure below. The pulley is a solid cylinder with mass M = 7.30 kg and radius r = 0.200 m. The block of mass m2 is allowed to drop, and the cord ...
November 9, 2011 by Anonymous

college physics
You are on a ladder painting your house. You accidentally drop a bucket of paint weighing 10lb from a height of 17ft. With what speed do the paint and bucket hit the rose bushes below? Would it be different if you dropped your paintbrush weighing 1/2 lb instead? b) what color ...
December 12, 2012 by Kpang

physics
I need help devloping a procedure: Using several bags filled with different amounts of the same item, take the mass of each and develop (and enact) a procedure to determine the mass of a single item....This procedure is supposed to model Milikans oil drop experiement.
May 18, 2013 by HELP

Chem
Can somebody check this for me?? Ksp AgCl 1.8x10^-10 Ag2CrO4 1.0x10^-12 AgI 1.0x10^-16 Ag3Po4 1.0x10^-16 1. calc the [Ag+] and [Cl-] at equivalence point. I got 1.3x10^-5 2. Calc. the [CrO4-2] required to precipitate AgCr04 if the [Ag+] equals the conc. cal. in #1 I got 5....
May 10, 2007 by Sara

Physics
While sitting on a tree branch 10 above the ground, you drop a chestnut. When the chestnut has fallen 2.8 , you throw a second chestnut straight down. What initial speed must you give the second chestnut if they are both to reach the ground at the same time?
August 31, 2009 by aubster

12th grade
In a TV set, a beam of electrons is shot horizontally from the rear of the TV tube toward the screen with a speed about 1x10^7 m/s. If the distance from the rear of the TV set to the front is .5m, approximately how far do the electrons drop because of the gravity as they move ...
February 17, 2010 by Rae Lee

physics
the coefficient of restitution between the ball and the floor is 0.60 If the ball is drop from rest at the height of 6.6 m from the floor. Find a) what is the maximum height will the ball attain after the first bounce. b) how much kinetic energy is lost duirng the impact if ...
February 21, 2011 by robert

Chemistry
The following rearrangement reaction is first order: C3H6 ¨ CH3CH=CH2 The rate constant for this reaction is 6.7 ~ 10−4. How many minutes will it take for the concentration of C3H6 to drop to 11.75% of its initial value? How do I calculate this step by step. My answer ...
March 20, 2011 by Alex

Chemistry
At room temperature, the surface tension of water is 72.0 mJ·m^–2. What is the energy required to change a spherical drop of water with a diameter of 1.80 mm to three smaller spherical drops of equal size? The surface area of a sphere of radius r is 4πr^2 and the volume ...
November 13, 2012 by Anonymous

Chemistry Help
At room temperature, the surface tension of water is 72.0 mJ·m^–2. What is the energy required to change a spherical drop of water with a diameter of 1.80 mm to three smaller spherical drops of equal size? The surface area of a sphere of radius r is 4πr^2 and the volume ...
November 17, 2012 by Anonymous

physics
A grinding wheel in the shape of a solid disk is 0.200 m in diameter and has a mass of 3.00 kg. The wheel is rotating at 2200 rpm about an axis through its center. (a) what is its kinetic energy? (b) How far would it have to drop in free fall to acquire the same amount of ...
November 4, 2009 by sarah

science(regents)
A television advertisement claims that a certain brand of cough drop reduces coughing for 8 hours. Describe an investigation that could be determine if this claim is vaild. IN your answer include this> - the treatment give to the expertimental group - treatment to be give ...
September 19, 2011 by Flynn

Science
Imagine you made a gallon pitcher of lemonade for your family picnic.You poured the lemonade into 12 paper cup until there wasn't a drop left.Is the volume of the lemonade in the pitcher and the lemonade in the 12 paper cups put together the same or different?Explain your ...
April 26, 2011 by Frances

Physics
While sitting on a tree branch 12m above the ground, you drop a chestnut. When the chestnut has fallen 2.5m, you throw a second chestnut straight down. What initial speed must you give the second chestnut if they are both to reach the ground at the same time?
February 9, 2012 by Alicia

chemisrty
The graph below shows two conductivity curves with respect to temperature of a germanium semiconductor. In one case, there is dopant added to the sample, and in the other there is none. Using some or all of the labels below, please drag and drop the labels to their correct ...
June 1, 2013 by Anonymous

Chemistry
The half-life for beta decay of strontium-90 is 28.8 years. A milk sample is found to contain 10.3 ppm strontium-90. How many years would pass before the strontium-90 concentration would drop to 1.0 ppm?
November 11, 2011 by Mindy

science
fallow a drop o water through three states of matter. describe what is happening to the molecules as the water turns to gas than describe what is happening to the molecules when the water freezes into ice
March 4, 2008 by valerie

spanish
point of is my most memoable day on the subway all of us we found out that dottiea middle aged women knew the lyrics to smack that - this also was the first time I have ever been on the subway to New York. We saw the ball in Times Square drop We arrived there as soon as they ...
December 6, 2008 by sam

Econ
What is the effect of the following shocks on the short-run level of national output? a A fall in interest rates? b An appreciation of the Home currency? c A tax cut? d A tax cut in Foreign? e A drop in consumer confidence (consumer want to spend less)? f News that imported ...
July 14, 2008 by Bo

applied physics
you are standing on a 100m tall buiding above a street and your friend is standing vertically below the building. When you drop a stone, your friend simultaneously throws the identical stone as yours at a speed of 50m/s in the same straight line. Calculate the time taken for ...
March 18, 2012 by jose

Physics
You and your friend throw balloons filled with water from the roof of a several story apartment house You simply drop a balloon from rest. A second balloon is thrown downward by your friend 2.1seconds later with an initial speed of 41.6m/seconds. they hit the ground at the ...
September 16, 2012 by Kimberly

Pre-Algebra
You drop a rock off a bridge. The rock's height, h(in feet above the water), after t seconds is modeled by h=-16t2+541. What is the height of the rock after 2 seconds?
March 4, 2013 by Amy

physics
A daredevil is dead set on jumping the Grand Canyon at its narrowest point (180 meters across). He has set up a ramp at 25 degrees and the ramp's release point is 20 meters above the rim of the canyon. He claims that his bike will be going 40m/s by the time he leaves the ramp...
September 22, 2013 by Marty

physics
A airplane traveling 1019 m above the ocean at 135 km/h is to drop a box of supplies to shipwrecked victims below. (a) How many seconds before being exactly overhead should the box be dropped? ______ s (b) What is the horizontal distance between the plane and the victims when ...
October 12, 2011 by Eddie E.

Math
Kate's plane leaves at 3:35 P.M. She has to check in 2 h and 35 min to get to the airport from her home. Kate must first drop off her dog, Fido, at her friend's house next door. She wants to spend 45 min talking to her friend. What is the latest time she should leave her house...
January 17, 2011 by pretty

Science (Asap)
Imagine you made a gallon pitcher of lemonade for your family picnic.You poured the lemonade into 12 paper cup until there wasn't a drop left.Is the volume of the lemonade in the pitcher and the lemonade in the 12 paper cups put together the same or different?Explain your ...
April 26, 2011 by Frances

Physics
A small plane flying horizontally 150m above the ground at a constant speed of 120km/h is to drop a container with supplies to a point on the ground. How far from the point directly above the target should the supplies be dropped without giving them an initial push?
September 24, 2012 by Lext

Astronomy
Put the following in order from earliest to latest. In doing so, assume that the Nice model occurred as described and that the Grand Tack model also occurred as described. 1) The formation of Jupiter 2) The inward migration of Jupiter due to gas forces 3) The instability "...
May 13, 2014 by keitanako

Physics
A rescue plane has to drop supplies to a group of castaways who are stranded on a deserted island. The plane is flying as 150 m/s at a level altitude of 1200 m. How far ahead of the landing zone should the plane release the supplies? I'm not even sure how to start this one. ...
November 2, 2007 by Lindsay

chemistry
a balloon is filled with 500 mL of helium at a temperature of 27 degrees celsius and 755 mmHg as the balloon rises in the atmosphere the pressure and temperature drop what volume will it have when it reaches an altitude where the temperature is -33 degrees celcius and the ...
May 8, 2012 by candi

chemistry
a balloon is filled with 500 mL of helium at a temperature of 27 degrees celsius and 755 mmHg as the balloon rises in the atmosphere the pressure and temperature drop what volume will it have when it reaches an altitude where the temperature is -33 degrees celcius and the ...
May 8, 2012 by candi

English
Hello. I will be grateful for some help. 1)Does the phrase "a sharp fall in soldier numbers" sound natural (meaning "a drop in troop numbers")? 2)Which word (that or which) is used in the context "he didn't give the exact number of troops that/which will leave the country"? 3)...
March 3, 2012 by Ilma

Physics
On a hot day in summer, your friends decide to go rafting down a local river. Since you are afraid of water, your job is to provide them with refreshments from a bridge as they pass. When the first raft is 10 meters away, traveling at 3.5 m/s, you drop a can of soda, which ...
October 8, 2012 by Ron

English
Please correct me if I'm wrong on any of this thanks! From the words below supply the words that complete the sentences. Capitulate, Caustic, Hierarchy, Iconoclast, Placid. A. While he enjoyed the work, the rigid CAUSTIC in the company meant his advancement would be slow. He ...
April 5, 2014 by Anonymous

Math
A vending machine has marbles of 4 different colors: Red, blue, purple,and yellow. The marbles are well mixed. You drop a quarter into the machine and you get 2 random marbles. Write out the sample space for the experiment. The sample space should be N = 10.
July 11, 2012 by Meredith

physics
playing shortshop, you pick up a ground ball and throw it to second base. the ball is thrown horizontally with a speed of 22 m/s ditectly toward point a. when the ball reaches the second baseman 0.45 s later, it is caught at ponit b. (a) how far were you from the second ...
December 13, 2011 by taylor

Chemistry
When dilute nitric acid was added to a solution of one of the following chemicals, a gas was evolved. This gas turned a drop of limewater, Ca(OH)2, cloudy, due to the formation of a white precipitate. The chemical was.... a. the household ammonia NH3 b. baking soda NaHCO3 c. ...
April 12, 2009 by Caroline

Physics
Suppose a monatomic ideal gas is contained within a vertical cylinder that is fitted with a movable piston. The piston is frictionless and has a negligible mass. The area of the piston is 3.06 10-2 m2, and the pressure outside the cylinder is 1.02 105 Pa. Heat (2109 J) is ...
April 15, 2007 by Mary

Physics
Suppose a monatomic ideal gas is contained within a vertical cylinder that is fitted with a movable piston. The piston is frictionless and has a negligible mass. The area of the piston is 3.06 10-2 m2, and the pressure outside the cylinder is 1.02 105 Pa. Heat (2109 J) is ...
April 15, 2007 by Mary

French 1
Is this how I would write July 10, 2001 in french? Thanks Le dix juillet, deux mille un cents. Thank you for using the Jiskha Homework Help Forum. The word for "thousand" in dates, if used, is generally written "mil." Be sure to drop the word "cents" at the end. It's just 2001.
May 22, 2007 by DANIELLE

History
I have to write an essay on the drop of the atomic bomb on japan in world war 2. Our teacher told us president Truman never dropped it on japan but demonstrated the bomb to japan on the effect o it. However, the internet said it was dropped and japan surrendered I dont know ...
March 1, 2010 by Kelsey allen

Physics
You are trying to package a 50g egg so that it won't break after you drop it from a height of 10 meters. You decide to use wood as a nice soft packaging to protect the egg. When the egg hits the ground, the wood "softens" the landing so that it takes 5 milliseconds for the egg...
March 21, 2011 by Paige

ENGLISH HW CHECK
Choose the correct answer for the ALL CAP word 1. My father always COMPLAINS that my sister's boyfriend is lazy. Answer a. complains b. complain c. complained d. complaining 2. Uncle Frisbee, who BE as bald as a grapefruit, buys every new hair-growing tonic he HAVE heard ...
October 26, 2011 by Anonymous

Physics need help now
A daredevil is dead set on jumping the Grand Canyon at its narrowest point (180 meters across). He has set up a ramp at 25 degrees and the ramp's release point is 20 meters above the rim of the canyon. He claims that his bike will be going 40m/s by the time he leaves the ramp...
September 22, 2013 by Marty

Microeconomics: Budjet Constraint
You have decided to eat sushi for lunch and have a grand total of $20 to spend. Whatever money you have left over from buying sushi rolls will be spent on cans of soda to get you through the rest of the day. Your problem is to choose the best combination of sushi rolls and ...
August 6, 2009 by Johnson

physics!
Wildlife biologists fire 20kg rubber bullets to stop a rhinoceros charging at 0.83m/s. The bullets strike the rhino and drop vertically to the ground. The biologists' gun fires 15 bullets each second, at 73m/s , and it takes 31sto stop the rhino.
October 28, 2012 by Jcota2

physics
While sitting on a tree branch 10.0 m above the ground, you drop a chestnut. When the chestnut has fallen 2.0 m, you throw a second chestnut straight down. What initial speed must you give the second chestnut if they are both to reach the ground at the same time? Answer is 8.8...
August 27, 2009 by jawn

physics
While standing on a bridge 45.0 m above ground, you drop a stone from rest. When the stone has fallen 3.80 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same instant? Take the ...
September 6, 2012 by lennox

Physics
While standing on a bridge 45.0 m above ground, you drop a stone from rest. When the stone has fallen 3.90 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same instant? Take the ...
September 6, 2012 by Marie

Physics
While standing on a bridge 45.0 m above ground, you drop a stone from rest. When the stone has fallen 3.90 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same instant? Take the ...
September 6, 2012 by Marie

chemistry
In the presence of a tungsten catalyst at high temperature, the decomposition of ammonia to nitrogen and hydrogen is a zero order process. If the rate constant at a particular temperature us 3.7x10^-6 mol. How long will it take for an ammonia concentration to drop from an ...
March 26, 2012 by court

probability and statistics
A 0.1μm diameter drop of 1mM protein solution is introduced into pure water centered at x. Assume proteins diffuse randomly by “stepping” a distance 0.1μm every millisecond. a. What is the density at x after 1 minute? b. How many protein molecules are there? What ...
September 18, 2012 by Sam

chemistry
1 L FLASK CONTAINS NITROGEN ALONG WITH A DROP OR TWO OF WATER AT 40C THE TOTAL PRESSURE BEING 760 TORR .IF ALL THE CONTENTS ARE TRANSFERRED TO ANOTHER FLASK OF 0.5L AT THE SAME TEMPERATURE WHAT WILL BE THE PRESSURE SET UP IN THE SECOND FLASK? (AQUEOUS TENSION AT 40C = 55 TORR)
September 30, 2010 by Anonymous

chemistry
1 L FLASK CONTAINS NITROGEN ALONG WITH A DROP OR TWO OF WATER AT 40C THE TOTAL PRESSURE BEING 760 TORR .IF ALL THE CONTENTS ARE TRANSFERRED TO ANOTHER FLASK OF 0.5L AT THE SAME TEMPERATURE WHAT WILL BE THE PRESSURE SET UP IN THE SECOND FLASK? (AQUEOUS TENSION AT 40C = 55 TORR)
September 30, 2010 by Anonymous

Physics
I have an experiment in which I drop a tennis ball ,, and measure its rebound height in every bounce. one of the question regarding this experiment is - were the collisions elastic or not ? support with evidence. How do these forces magnitude compare with the weight of the ...
July 31, 2011 by AfterLife

chemistry
If I make an ice pack with 750 mL of water, what mass of ammonium chloride must I include to get the temperature to drop from 20 degrees celsius to 5 degrees celsius. The heat of solution of the water and ammonium chloride is 14.8 kJ/mole.
November 14, 2010 by Anna

Physics
If you drop a 1.0 kg weight from a height of 1.0 m, how many joules of kinetic energy will it have when it reaches the ground? Can I use the equation for work: W = F*s to find the kinetic energy? Or would I have to find the velocity of the weight as it falls because I'm not ...
October 10, 2011 by Kyle

French
Can someone check this recipe for me? I don't know how to use "de" properly. * 1 livre [454 g] de les liens de saucisson italiens doux, a coupé * 6 oeufs * 2 [10-ounce/de 284 mL chaque] d'emballe gelé a coupé des épinards, dégelés et bien drainés * 1 [16-ounce/de 454 g] du ...
September 22, 2007 by Anonymous

more Broadcasting/english
May I get some feedback on this one as well please? GENERAL MOTORS MAY INVEST 38 MILLION DOLLARS TO EXPAND ITS LANSING GRAND RIVER ASSEMBLY PLANT… THIS MOVE COULD BRING 150 JOBS. THE PRESIDENT AND CEO OF LANSING ECONOMIC AREA PARTNERSHIP (LEAP) INCORPORATED—BOB TREZISE— SAYS ...
March 14, 2013 by Blaze

physics (SOS!)
a cylinder that is 20 cm tall is filled with water. If a hole is made in the side of the cylinder, 5cm below the top level, how far from the base of the cylinder will the stream land? Assume that the cylinder is large enough so that the level of the water in the cylinder does ...
December 2, 2012 by zoe

Physics
A mine shaft is known to be 57.8 m deep. If you would drop a rock down the shaft, how long would it take for you to hear the sound of the rock hitting the bottom of the shaft knowing that sound travels at a constant velocity of 345 m/s? The answer is 3.60s, but I need the ...
October 12, 2010 by Alina

St. Andrews
An airplane traveling 1011 m above the ocean at 145 km/h is going to drop a box of supplies to shipwrecked victims below. (a) How many seconds before the plane is directly overhead should the box be dropped? 1 s (b) What is the horizontal distance between the plane and the ...
October 24, 2010 by CArl

physics
An airplane traveling 1015 m above the ocean at 115 km/h is going to drop a box of supplies to shipwrecked victims below. (a) How many seconds before the plane is directly overhead should the box be dropped? (b) What is the horizontal distance between the plane and the victims...
November 26, 2010 by javane

physics
An airplane traveling 1007 m above the ocean at 150 km/h is going to drop a box of supplies to shipwrecked victims below. (a) How many seconds before the plane is directly overhead should the box be dropped?(b) What is the horizontal distance between the plane and the victims ...
October 27, 2012 by denise

Physics
a helicopter, travelling horizontally at a constant velocity, is 82m above ground. The pilot prepares to release a package intended to land on the ground 96m horizontally ahead. no air resistance. He lets the package drop. what is the velocity of the helicopter?
October 28, 2012 by KIRA

Physics
A 6.7 kg package starts from rest and slides down a mail chute that is 50 m long and has a vertical drop of 10m. If the velocity of the package at the bottom of the chute is 4m/s what is the average frictional force on the package as i slides down the chute?
October 21, 2012 by Jazmin

Chemistry
why would the concentration of ascorbic acid decrease as the temperature rises? Also is there any reason that the concentration would drop suddenly at 30 C then go back up and continue to decrease evenly. ( i repeated these 3set titrations 3 times and all were concordant but ...
June 12, 2012 by Aimee

Chemistry
why would the concentration of ascorbic acid decrease as the temperature rises? Also is there any reason that the concentration would drop suddenly at 30 C then go back up and continue to decrease evenly. ( i repeated these 3set titrations 3 times and all were concordant but ...
June 12, 2012 by Aimee

Jenish
Suppose you want to run some apparatus that is 95 m from an electric outlet. Each of the wires connecting your apparatus to the 120 v source has a resistance per unit length of .0065 ohms/m. If your apparatus draws 3.0 A what will be the voltage drop across the connecting ...
February 16, 2008 by Physics

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