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A rifle with a mass of 2.5 kg fires a bullet with a mass of 5.5 g (0.0055 kg). The bullet moves with a muzzle velocity of 330 m/s after the rifle is fired.
(a) What is the momentum of the bullet after the rifle is fired? 826.815 kg·m/s
(b) If external forces acting on the rifle can be ignored, what is the recoil velocity of the rifle? m/s (in the opposite direction to the bullet)
Two equal forces are applied to a door. The first force is applied at the midpoint of the door; the second force is applied at the doorknob. Which force exerts the greater torque
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As you walk across a synthetic-fiber rug on a cold, dry winter day, you pick up an excess charge of -58uc. How many excess electrons did you pick up
A magician pulls a tablecloth from under a 200 g mug located 30.0 cm from the edge of the cloth. The cloth exerts a friction force of 0.100 N on the mug, and the cloth is pulled with a constant acceleration of 2.90 m/s2
A step-down transformer has 30 turns of wire on one coil and 1200 turns on the other. what is the required rms input voltage
A rifle with a weight of 35 N fires a 3.0-g bullet with a speed of 230 m/s. Find the recoil speed of the rifle
A 700 N car traveling at 25m/s.The breaks are applied suddenly and the car slides to a stop. The average breaking force between the tires and the road is 7100 N.How far will the car slide once the breaks are applied.
what force is required to slow a 1250kg car traveling 115km/h to 30km/h within 3.50 s? how far does the car travel during its deceleration
During the spin-dry cycle of a washing machine, the motor speeds up from 30 rad/s to 95 rad/s, What is the magnitude of the angular acceleration of the motor
Light travels from air through a flat sheet of glass (n =1.5) into water. If the angle of incidence in air is 39°, what is the angle of the refracted ray in water
When the water turns to ice during the night, heat is free into the plants, thereby giving them a measure of protection against the falling temperature. Assume a grower sprays 7.64 kg of water at 0°C onto a fruit tree.
consider a 150 ohm and 180 ohm resistor connected in a parallel combination with a 9 volt battery. determine the total resistance of the parallel combination.
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