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Q. Two particles are separated by a certain distance. The force of gravitational interaction between them is Fsub 0. Now the separation between the particles is tripled. Find the new force of gravitational interaction Fsub 1. Express your answer in terms of Fsub 0.
Q. In a circus performance, a monkey is strapped to a sled and both are given an initial speed of 5.0 m/s up a 23.0° inclined track. The combined mass of monkey and sled is 20 kg, and the coefficient of kinetic friction between sled and incline is 0.20. How far up the incline do the monkey and sled move?
Two pipes of equal length are each open at one end. Each has the fundamental frequency of 500 Hz at 325 K. In one pipe the air temperature is increased to 330 K. If the two pipes are sounded together, what beat frequency results.
A major-league catcher gloves a 93 mi/h pitch and brings it to rest in 0.14m. If the force exerted by catcher is 803 N, what is the mass of the ball.
A photon with a wavelength 4.40 scatters from an electron initially at rest. Find out the wavelength of the scattered photon when the scattered electron has its utmost kinetic energy. Kmax = 2.37*20^-14.
A positive charge of q = 3.5 µC is pulled on by two negative charges. One, -2.0 µC, is 0.050 m to the north and the other, -4.0 µC, is d = 0.029 m to the south. What total force is exerted on the positive charge .
A 260 wooden raft floats on a lake. When an 80 man stands on the raft, it sinks 5.0 deeper into the water. When he steps off, the raft vibrates for a while. What is the frequency of vibration.
An elastic cord is 69 cm long when a weight of 57 N hangs from it but is 70 cm long when the weight of 75 N hangs from it. What is the "spring" constant k of this elastic cord.
A 16 g rifle bullet traveling 180 m/s buries itself in a 3.5kg pendulum hanging on a 2.7 m long string, which makes the pendulum swing upward in an arc. find the horizontal component of the pendulum's maximum displacement.
Objective questions based on momentum and force.
What types of lifestyle changes will be brought about by living in a house whose space heating and hot water needs are supplied almost completely by the sun.
If the football has a mass of 0.47kg and the time of contact with the ball is 0.021s, what is the force exerted by the ball on the kicker's foot.
Two non conservative forces are present: friction does -2.00 104 J of work on the car, and a chain mechanism does +3.00 104 J of work to help the car up a long climb. What is the transform in the car's kinetic energy, ΔKE = KEf - KE0, from A to B.
A flywheel in a motor is spinning at 560 when a power failure suddenly occurs. The flywheel has mass 40.0 and diameter 75.0. The power is off for 34.0, and during this time the flywheel slows down uniformly due to friction in its axle bearings. Durin..
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