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The drawing shows a triple jump on a checkerboard, starting at the center of square A and ending on the center of square B. Each side of a square measures3.1 cm. What is the magnitude of the displacement of the colored checker during the triple jump?
A cowboy at a dude ranch fills a horse trough that is 1.5 m long, 60 cm wide and 40 cm deep. He uses a 2.0cmdiameter hose from which water emerges at 1.5m/s. How long does it take him to fill the trough.
A basketball player grabbing a rebound jumps 70 cm vertically. How much total time (ascent and descent) does the player spend (a) in the top 11.9 cm of this jump and (b) in the bottom 11.9 cm.
Conservation of energy tells us that energy cannot be created or destroyed. Clearly, energy is required for radioactivity to occur. Where is this energy coming from?
Two projectiles are thrown with the same initial speed, one at an angle with respect to the level ground and the other at angle 90 degree. Both projectiles strike the ground at the equivalent distance from the projection point. Are both projectiles i..
Determine the magnitude of the emf induced in the loop after exactly time 6 has passed since the circumference of the loop started to reduce.
A flight attendant pulls her 63N flight bag a distance of 312m along a level airport floor at a constant velocity. The force she exerts is 39N at the angle of 59° above the horizontal.
How many revolutions will the car have gone through.
A 1000 kg experimental rocket sled on a level frictionless rail is loaded wiht 50kg of propellant. It exhausts the propellant in a 20-s "burn". If rocket, initially at rest, moves at 150m/s after the burn, what impulse is experienced by the rocket..
Describe its motion. (Will it slide forever at a constant velocity? Will it slide to a stop? Illustrate in what way will its energy changes be similar to that of a pendulum?)
A fire hose ejects a stream of water at an angle of 31.20° above the horizontal. The water leaves the nozzle with a speed of 24.50 m/s. assume that the water behaves like a projectile, how far from a building should the fire hose be located to hit..
A 1.80 MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward sound receiver as the heart beats.
The position of an air-track cart that is oscillating on a spring is given by the equation x = 12.4 cos[(6.35 s-1)t] . At what value of t after t= 0.00s in the cart first located at x = 8.47 cm ?
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