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The air inside a bicycle tire pump has 209 joules of work done on it as 92.7 joules of heat is conducted away from it. What is the change in internal energy of the air?
A 4.00 kg block is free from rest 2.0m high at the top of a 30 degree frictionless incline. The block makes a head-on elastic collision with another 3.00 kg block initially at rest on a horizontal surface at the bottom of the incline.
A guitar string is under a tension of T = 198N. The string has a mass of m = 99g and length L. What is the length of the string in m
question 1 a silver wire is 4.8 m long and 0.47 mm in diameter. what is its resistance?question 2 when a potential
The leg and cast weigh 177N (w1). Find out the weight w2 and the angle α required so that no force is exerted on the hip joint by the leg plus cast.
q1. a potters wheel moves from rest to an angular speed of 0.14 revs in 24 s.what is the angular acceleration?response
An unknown substance has a mass of 0.125 kg and an initial temperature of 112.3°C. The substance is then dropped into a calorimeter made of aluminum containing 0.285 kg of water initially at 27.8°C.
a boy throws a 2 kg rock at a 5 kg block of styrofoam that hangs by a 3 m long rope attached to a tree branch. when the
An interesting recent development is a growing awareness of bacteria. It's now realized that the total biomass of bacteria on earth far outweighs all animals, plants, and other complex living beings put together. A recent claim is that "there are 10 ..
q1. a person eats a dessert that contains 260 calories one. the skin temperature of this individual is 36 degree
A projectile is fired from ground level at time t=0, at an angle θ with respect to the horizontal. Find the time it takes the projectile to reach its maximum height H
You're carrying a 3.2-m-long, 25 pole to construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip. How much force must you exert to keep the pole motionl..
Two timpani (tunable drums) are played at the same time. One is tuned so that when it is struck, sound is produced that has a wavelength of 2.20 m. what beat frequency is heard
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