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An 91 kg man climbs a 981 m high mountain in 1.01 hour and uses 7.6 kcal/min.
A. Determine the power consumption in watts.
B. What is the power output in useful work?
C. What was the percent efficiency of this man during the climb?
What angle did the hawk make with the horizontal throughout its descent? For how long did the mouse enjoy the free fall.
A horizontal bar of negligible weight has a 55.10 lb weight hanging from the left end and a 72.0 lb weight hanging from the right end. The bar is seen to balance 97.50 in from the left end. Find the length of bar.
illustrate what is the new horizontal distance L between the base of the slide and the splashdown point of the person?
What is the average force exerted on the ball. How fast (in ) must a centrifuge rotate if a particle 6.50 from the axis of rotation is to experience an acceleration of 125,000 's.
what are the wavelengths of electro magnetic waves in free space that have frequencies of a) 5.00 x 10^19Hz, b) 4.00 x 19^9.
A 238 g particle is released from rest at point A inside a smooth hemispherical bowl of radius 32.5 cm.compute the gravitational potential energy at A relative to B.
In the Atwood machine shown below, m1 = 2.00 kg and m2 = 5.50 kg, How far will m1 descend below its initial level and Find the velocity of m1 after 1.80 s
Chromium is produced by reacting its oxide with aluminium. If 354 g of Cr2O3 and 158 g of Al react to form 204 g of Al2O3, how many grams of Cr are formed.
Two speakers, one directly behind the other, are each generating a 275 Hz sound wave. What is the smallest separation distance between the speakers that would produce destructive interference at a listener standing in front of them? Assume that th..
You are driving to grocery store at 21. You are 100 from an intersection when the traffic light turns red. Presume that your reaction time is 0.75 and that your car brakes with constant acceleration. How far from the intersection are you when you ..
Consider an infant who weighs 100 newtons. During each year she grows so that each dimension of her body increases by 5%. How much would she weigh then.
You drop a stone into a deep well and hear it hit the bottom 1.80 s later. This is the time it takes for the stone to fall to the bottom of the well, plus the time it takes for the sound of the stone hitting the bottom to reach you. Sound travels ..
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