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A bullet of mass 7.00g is fired horizontally into a wooden block of mass 1.28kg resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.230. The bullet remains embedded in the block, which is observed to slide a distance 0.220m along the surface before stopping.
Find the initial velocity of the bullet?
Two solid spheres, each of mass m, are rolling without slipping with a speed v. If the spheres have radii R1 and R2 with R1/R2 = 5.5, what is the ratio of their kinetic energies
A 1.10 kg mass is at the center of a uniform spherical shell of mass 1.09 1020 kg and radius 1.05 106 m. Find the resultant gravitational force on the mass
A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 56 dB by an observer 10 km away. What is the average power generated by the horn
You are in a hot air balloon (yes, another balloon problem!) rising from the ground at a constant velocity of 2.10 m/s upward, How long does the cork remain in the air
A 65 kg trunk is pushed 6.4 m at constantspeed up a 30° incline by a constant horizontal force. Calculate the work done by the applied horizontal force
A pressurized cylindrical tank, 5.0 in diameter, contains water which emerges from the pipe at point C, with a velocity of 12 . Point A is 10 above point B and point C is 3 above point B. The area of the pipe at point B is 9×10?2 and the pipe narr..
A simple pendulum is swinging back and forth through a small angle, its motion repeating every 1.13 s. How much longer should the pendulum be made in order to increase its period by 0.34 s
A revolving door consists of four rectangular glass slabs,with the long end of each attached to a pole that acts as the rotation axis. Find the rotational inertia of the entire door
three point charges lie along a straight line where q1 6.00microc q2 1.50microc and q3 -2.00microc. the separation
As you finish listening to your favorite compact disc (CD),the CD in the player slows down to a stop. Assume that the CD spinsdown with a constant angular acceleration. *If the CD rotates at 500 rpm (rev
A typical arteriole has a diameter of 0.030 mm and carries blood at the rate of 5.5×10?6cm3/s. What is the speed of the blood in an arteriole
A 876 kg drag race car accelerates from rest to 109 km/h in 0.862 s. What average force is exerted on the car
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