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A rifle with a weight of 40 N fires a 4.5-g bullet with a speed of 270 m/s.
(a) Find the recoil speed of the rifle.
m/s
(b) If a 775-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle.
A 0.350 kg air-track glider is attached to each end of the track by two coil springs. Find the x-coordinate of the glider at time t= 0.530T, where T is the period of the oscillation
what was the cars original kinetic energy? after the car has stopped, what is the change in temperature of the brakes and wheels?
n oil film (n = 1.40) of thickness 290 nm floating on water (n=1.33) is illuminated with white light at normal incidence
A physics professor is pushed up a ramp inclined upward at an angle 34.0 degrees above the horizontal as he sits in his desk chair that slides on frictionless rollers, Use the work-energy theorem to find his speed at the top of the ramp
After the interaction, the particles (which can't be distinguished) are observed moving at angles 55.3° and 34.7°, both angles being measured with respect to the original direction of motion. Illustrate what are the final speeds of the particles?..
A train moving at a constant speed of 66.0 km/h moves east for 43.0 min, then in a direction 56.0° east of due north for 16.0 min, find the average velocity of the train during this run
Suppose the mirror is misaligned, so that the actual angle between the normal to the surface and due south is too large by 0.003°. By how many meters (due east) will the reflected ray miss the detector
A uniform beam of length L = 7.80 m and weight 3.95 102 N is carried by two workers, Determine the force that each person exerts on the beam
Mountaineers often use a rope to lower themselves down the face of a cliff (this is called rappelling). They do this with their body nearly horizontal, What tension does his rope need to support
A pogo and rider of 80kg total mass at the high point of a 2.0m jump will drop 1.3m before the pogo plunger touches the ground, What approximate average force does the pogo stick exert on the ground during the landing
A photoflash unit makes a very bright light for a very short time. Discuss differences in the exposure of the film with and without a flash unit. Consider the f-stop and shutter speed in your deliberation.
Take the mass of the sun to be m_s = 1.99×1030 {rm kg}, gravitational constant to be G = 6.67×10-11 {rm N} cdot {rm m^2/kg^2}, and an acceleration due to gravity at the earth's surface to be g = 9.810 {rm m/s^2}.
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