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A person jumps from the roof of a house 3.4 high. When he strikes the ground below, he bends his knees so that his torso decelerates over an approximate distance of 0.70 . If the mass of his torso (excluding legs) is 42 . V= 8.2 m/s (figured out) Find the average force exerted on his torso by his legs during deceleration.
On a hot summer afternoon, Keith is out fishing in a rowboat when he decides to jump into the water and go for a swim, what is its velocity in the opposite direction after he jumps
After 6.00 kg of water at 77.5 oC is mixed in a perfect thermos with 3.00 kg of ice at 0.0 oC, the mixture is allowed to reach equilibrium. find the change in entropy that occurs
An airtight box has a removable lid of area 2.0 10-2m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 0.75 x10^5Pa. The inside of the box is completely evacuated. What is the magnitude of force nece..
80 cm3 of water takes 12 min to cool from 40?C to 15?C in a draft; it is contained in a copper calorimeter of mass 150 g, Calculate the specific heat of the suspension in SI units
Steam at 100°C is added to ice at 0°C. Find the amount of ice melted and the final temperature when the mass of steam is 14 g and the mass of ice is 54 g. g °C
Two identical small insulating balls are suspended byseparate 0.25-m threads that are attached to a common point on theceiling. Each ball has a mass of 8.0 × 10-4 kg.Initially the balls are uncharged and hang straight down.
Light from a helium-neon laser (l=608 nm) passes through a circular aperture and is observed on a screen 2.15 m behind the aperture. What is the diameter (in mm) of the hole
A 1.00 V potential difference is maintained across a 9.0 resistor for a period of 14.0 s, What total charge passes through the wire in this time interval
A 35.2 kg box is sitting on the seat of a ferris wheel. Find the normal force the seat of the ferris wheel exerts on the box at the bottom of the loop and at the top of the loop
A fully loaded, slow-moving freight elevator has a cab with a total mass of 1100 kg, which is required to travel upward 49 m in 3.9 min, starting and ending at rest. The elevator's counterweight has a mass of only 830 kg, so the elevator motor must h..
A small container of water is placed on a carousel inside a microwave oven, at a radius of 11.5 cm from the center. What angle does the water surface make with the horizontal
The magnitudes of the four displacement vectors shown in the drawing are A = 20.0 m, B = 11.0 m, C = 12.0 m, and D = 21.0 m.
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