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A rifle with a weight of 30 N fires a 3.0 g bullet with a speed of 210 m/s.
(a) Find the recoil speed of the rifle.
m/s
(b) If a 675 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle.
A three-step cycle is undergone by 3.8 mol of an ideal diatomic gas: the gas is then contracted at constant pressure back to its original volume. Throughout the cycle, the molecules rotate but do not oscillate. What is the efficiency of the cycle
In a railroad yard, a 3.5×10^4 kg boxcar moving at 6.0 m/s is stopped by a spring-loaded bumper mounted at the end of the level track
A circular pond of radius 12 m has a layer of ice 0.25 m thick. On a spring day, What is the rate of heat transfer through the ice
A large box with mass 45 kg is being pushed up a ramp at a 32 degree incline at a constant velocity by a man pushing parallel to the incline of 7.80 m. determine the force the man is pushing on the box
Aaron (mass 60 kg) catches his running cat (mass 5 kg) moving horizontally at 1.5 m/s. What is the speed of Aaron and his cat after the catch
He-Ne lasers are often used in physics demonstrations. They produce light of wavelength 633nm, What is the average energy density in the laser beam
A ball of aluminum is at a depth of 100.0 m under water whose density is 1,000 kg/m3. The bulk stress on the ball due to the water is
The chin-up is one exercise that can be used to strengthen the biceps muscle. How much work can the biceps muscles (one in each arm) perform in a single contraction
What is maximal speed v of the elevator
A long horizontal hose of diameter 3.2 cm is connected to a faucet. At the other end, there is a nozzle of diameter 1 cm. What is the velocity of the water in the hose
A 1.0 mCi source of Phosphorus called P-32, a beta emitter, is imlanted in a tumor where it is to administer 36 Gy. how long should the source remain implanted
A parallel plate capacitor has square plates with sides of length 20 cm. The distance between the plates is 4 mm. The plates are charged up to 50volts, What is the energy stored by the capacitor
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