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A rifle with a weight of 20 N fires a 3.0 g bullet with a speed of 260 m/s.
(a) Find the recoil speed of the rifle.
m/s
(b) If a 700 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle.
The terminals of a 12-V battery are connected to parallel plates. What plate separation would produce an electric field between the plates of 1400 N/C
A uniform shaft, fixed at one end & free at other, is twisted so that each cross - section rotates through an angle proportional to the distance from the fixed end. If the shaft is released from rest in this position, determine the s
A 1kg block at the bottom of a ramp is on a compressed spring with the spring constant k=300N/m. what is the initial acceleration of the block up the ramp
A solenoid is to have an inductance of 0.265 mH, a cross-sectional area of 5.58 10-4 m2, and a length of 40.4 cm, How many turns per unit length should it have
At an outdoor market, a bunch of bananas is set into oscillatory motion with an amplitude of 26.93 cm on a spring with a spring constant of 10.7167 N/m. What is the weight of the bananas
After staying on Penitgy for a few days, the landing craft returns to its mothership. At take-off, both engines are run at full thrust for 87 s. What height does the landing craft attain
A nuclear power plant generates waste thermal energy at a rate of 1000 MW = 1000 × 106 W. Assume the heat of vaporization of a water is 2.256× 106 J/kg. How much water must evaporate to cool the plant per day
The drive propeller of a ship starts from rest and accelerates at 3.10 x 10-3 rad/s2 for 2.60 x 103 s. Find the total angular displacement of the propeller
A tennis ball of mass = 0.068kg and speed = 21m/s strikes a wall at a 45 degree angle and rebounds with the same speed at 45 degrees. What is the magnitude of the impulse given to the ball
The coefficient of performance of a refrigerator is defined as the ratio of heat extracted, At what rate will this refrigerator deliver heat to the room in which it is operating when it is running
A shopper in a supermarket pushes a cart with a force of 37.5 N directed at an angle of 17.0° downward from the horizontal. Find the work done by the shopper on the cart as he moves down an aisle 45.0 m long
Estimate the thickness of lead shielding needed to reduce the exposure rate 2.5 m from a 5.92x10^11 Bq point source of Cs-137 to 1.0 mR/hr.
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