How much time does it take to lift the piano
A 140 kg piano is being lifted at a steady speed from ground level straight up to an apartment 16.0 m above the ground. The crane that is doing the lifting produces a steady power of 400W. How much time does it take to lift the piano?
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Bonnie and Clyde are sliding a 360 kg bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde pushes from behind with 405 N of force while Bonnie pulls forward on a rope with 350 N of force. What is the safe
If the police car accelerates uniformly at 3.00m/s^2 and overtakes the speeder after accelerating for 9.00 s, what was the speeder's speed?
A weight lifter lifts a set of weights vertical distance 2.00 m. If a constant net force of 350 N is exerted on the weights, what is the net work done on the weight?
Students in the psychology department consume an average of 5 cups of coffee per day with a standard deviation 0f 1.75 cups. The number cups of coffee consumed is normally distributed.What proportion of students consume an amount equal to or l
A radar antenna is tracking a satellite orbiting the earth. At a certain time, the radar screen shows the satellite to be 158 km away. The radar antenna is pointing upward at an angle of 62.3° from the ground. Find the x and y components (in k
A spelunker (cave explorer) drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 2.34 s after the stone is dropped. How deep is the hole?
A ball is thrown downward with an initial speed of 25 m/s from the top of a 210 m tall building. At the same time another ball is thrown upward from ground level with a speed of 25 m/s At what distance from the bottom do the two balls pass each ot
A baseball outfielder throws a 0.150 kg baseball at a speed of 36.0 m/s and an initial angle of 33.0°. What is the kinetic energy of the baseball at the highest point of its trajectory?
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