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A stone is dropped at t = 0. A second stone, with 6 times the mass of the first, is dropped from the same point at t = 56 ms.
(a) How far below the release point is the center of mass of the two stones at t = 310 ms? (Neither stone has yet reached the ground.)
(b) How fast is the center of mass of the two-stone system
Baseball scouts often use a radar gun to measure the speed of a pitch, What will be the increase in frequency if these waves are reflected from a 60.0mi/h fastball headed straight toward the gun
what is the combined mass of the dog and basket.
How fast (in {rm rpm}) must a centrifuge rotate if a particle 8.5 cm from the axis of rotation is to experience an acceleration of 115000 {rm g}'s.
How fast should a car move toward. A cardinal (Richmondena cardinalis) of mass 3.90×10-2 and a baseball of mass 0.144 have the same kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of the baseball's moment..
A uniform electric field points midway between the positive x and y axies. Its strength is 100Volts/m. A -50nC charge is placed at the position ( 2m, 3m ) and fixed in place. What are the components of the total electric field at the location (..
A string requires a 186 N force in order to break. A 1.50 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.90 m. What is the highest speed that this mass can be whirled without breaking the string.
If the sphere is enclosed in a room whose walls are kept at -5°C, what is the net flow rate of energy out of the sphere
The client also says that he does not remember any Section 1231 net losses on the prior-year returns. Illustrate what should Harold do? Why?
A dynamite blast at a quarry launches a rock straight upward, and later it is rising at a rate of 15m/s. Assuming air resistance has no effect on the rock, calculate the total time the rock is in the air.
A certain airplane has a speed of 250.0 km/h and is diving at an angle of 30.0° below the horizontal when the pilot releases a radar decoy. The horizontal distance between the release point and the point where the decoy strikes the ground is 700 m..
A broad beam of light of wavelength 485nm is incident at 90° on a thin, wedge-shaped film with index of refraction 1.50. An observer intercepting the light transmitted by the film sees 17 bright and 16 dark fringes along the length of the film. By..
A 42.00kg pole vaulter running at 13 m/s vaults over the bar. Her speed when she is above the bar is 1.3 m/s. Avoid air resistance, in addition to any energy absorbed by the pole, and determine her altitude as she crosses the bar.
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