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A spring with spring constant 15.0 N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is then pulled down 3.0 cm and released. If the ball makes 55 oscillations in 20 s, what are its mass and maximum speed?
A 2.90 m long, 320 kg steel beam extends horizontally from the point where it has been bolted to the framework of the new building under construction. A 66 kg construction worker stands at the far end of the beam.
A 46g marble moving at 2.3m/s strikes a 24g marble at rest. What is the speed of the first marble immediately after the collision
A basketball player makes a jump shot. The 0.600-kg ball is released at a height of 2.15 m above the floor with a speed of 7.40 m/s. What is the work done on the ball by air resistance
Two equally charged particles each have a mass of 0.015kg. They are suspended by a light string with a 60 degree angle between them. find the magnitude of the repulsive electric force
A boxcar of mass 5.32 x 10^4 kg is rolling south at 3.49 m/s when it collides and couples with another boxcar that is rolling north at 5.12 m/s. Find the mass of the boxcar
A dynamite blast at a quarry launches a rock straight upward, and 2.3 s later it is rising at a rate of 18 m/s, calculate blast speed at launch
Suppose 1.0 mol of a monatomic ideal gas initially at 10 L and 348 K is heated at constant volume to 696 K, What is the efficiency of the cycle
In order to heighten your enjoyment of your 29-carat blue diamond, you view it through a lens held close to your right eye, estimate the focal length of the lens
At what temperature is the speed of sound in helium (ideal gas, = 1.67, atomic mass = 4.003 u) the same as its speed in oxygen gas at 4.78 oC
an electron microscope accelerates an electron (mass of electron is 9.11x10^-31 kg) from rest to 2.8 x 10^7 m/s in a distance of 2.80 cm, what is the average force on the electron
A sound wave in air has a frequency of 264Hz and travels with a speed of 347m/s. How far apart are the wave crests
Some amusement park rides move you back and forth in the horizontal direction. Why is this motion so much more disturbing to your body than cruising at a high speed in a jet airplane.
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