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Determine the time for the feather to fall to the surface of the moon if i t dropped on the moon from a height of 1.40 meters. The acceleration of gravity on the moon is 1.67 m/s2.
A variable-speed drill, initially turning at 300 rpm, speeds up to 1300 rpm in a time interval of 0.3 s
A car traveling at a speed of 18 m/s crashes into a solid concrete wall. The driver has a mass of 90 kg. What is the change in momentum of the driver as he comes to a stop
An ?-particle has a charge of +2e and a mass of 6.64 multiply.gif 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.12 multiply.gif 106 V, What is the radius of its circular path
a 18000 n automobile travels at a speed of 43 kmh northward along a street and a 7000 n sports car travels at a speed
A body starts from rest, moves in a straight line with constant acceleration, and covers a distance of 19.6 meters in 4 sec: what was the velocity in half the total time
A paratrooper is initially falling downward at a speed of 33.0 m/s before her parachute opens. How far does the paratrooper fall during this time interval
A 1.50-kg iron horseshoe initially at 670°C is dropped into a bucket containing 23.0 kg of water at 24.0°C. What is the final temperature of the water-horseshoe system
A soccer player kicks the ball toward a goal that is 27.0 m in front of him. Find the speed of the ball when the goalie catches it in front of the net
two sinusoidal waves with the same amplitude a and frequency f travel in opposite directions along a long string. you
The angular position of a point on the rim of a rotating wheel is given by θ = 4t-3t2+t3, where θ is in radians and t is in seconds. Determine formulas for the angular velocity
9.75-m ladder with a mass of 23.2 kg lies flat on the ground. Apainter grabs the top end of the ladder and pulls straight upwardwith a force of 245 N. What is the ladder's moment of inertia
A hand exerciser utilizes a coiled spring. A force of 85.0 N is required to compress the spring by 0.0151 m. Determine the force needed to compress the spring by 0.0503 m.
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