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Question: A gun barrel weighing 1200 lb has a recoil spring of stiffness 20,000 lb/ft. If the barrel recoils 4 ft on firing, determine
(a) the initial recoil velocity of the barrel,
(b) the critical damping coefficient of a dash pot that is engaged at the end of the recoil stroke, and (c) the time required for the barrel to return to a position 2 in. from its initial position.
The drawing shows four point charges. The value of q is3.3 μC, and the distance d is 0.80 m. Find the totalpotential at the location P. Assume that the potential of a point charge is zero at infinity.
an ac power generator produces 60 a (rms) at 4000 v. the voltage is stepped up by an ideal transformer, what is the turn ratio of the transformer
a water molecule consists of an oxygen atom with two hydrogen atoms bound to it . the angle between the two bonds is
A golf ball traveling 3 m/s to the right has a head-on with astationary bowling ball in a friction-free environment. If the collision is almost perfectly elastic, the speed of the golf ball immediately after the collision is:
The engineer of a passenger train traveling at 25 meter per second sights a freight train whose caboose is 200 meter ahead on the same track. Obtain the speed of the passenger train just before the collision
A spherical balloon has the potential to reach a diameter of 35 cm, what would be the volume of this balloon when it reaches a pressure of 0.75P0 and a temperature of -15°C
A 2.0-kg ball is attached to the end of a 2.5-m string to form a pendulum. This pendulum is released from rest with the string horizontal
A helium-neon laser emits light of wavelength 632.8 nm and has a power output of 13 mW. How many photons are emitted per second by this laser
An 825-N sled is pulled a distance of 161 m. The task requires 1.50 ^ 10^4 J of work and is done by pulling on a rope with a force of 137 N. At what angle is the rope held.
A 4.94-g bullet is shot through a 0.99-kg wood block suspended on a string 2.00 m long. The center of mass of the blockrises a distance of 0.50 cm. Find the speed of the bullet as itemerges from the block if its initial speed is 393 m/s.
a particle of mass m1 moving with a velocity u makes a head-on elastic collision with a particle of mass 2m initially
A 57 kg rock with a volume of 36 L is completely submerged in water. The density of water is 1 kg/L. What volume of water is displaced by the rock
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