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A 33-kg girl is bouncing on a trampoline. During a certaininterval after leaving the surface of the trampoline, her kineticenergy decreases to 190 J from 450 J. How high does she rise duringthis i nterval? Neglect air resistance.
A solid 11-kg cylinder rolls without slipping on a rough surface. find the kinetic energy due to rotation of the block about its center-or-mass
Suppose he hits the ball with a speed of 29 m/s at an angle of 26° above the horizontal. Explain how long was the ball in flight? How far did it travel?
a 98-g piece of copper is heated in a furnace to a temperature tc. the copper is then inserted into a 150-g copper
using energy conservations how would your calculated final velocity change if you threw a ball off a building straight
If a 5 mile walk (as in problem 7) is completed in 1 hour and 30 minutes, what is the power output of the walker
A 1.65 kg bowling trophy is held at arm's length, a distance of 0.68 m from the shoulder joint. What is the magnitude of the torque applied by the trophy
a a reversible heat pump is used to maintain a temperature of 0c in a refrigerator when it rejects the heat to the
A horizontal beam of electrons initially moving at 4.2 107 m/s is deflected vertically by the vertical electric field between oppositely charged parallel plates, What is the charge per unit area on the plates
The lowest outdoor temperature ever recorded on Earth was %u2212128.6 %u25E6F, recorded at Vostok Station, Antarctica, in 1983. What is this temperature on the Kelvin scale
Starting with the equation E=mc^2, determine the ratio of MeV per AMU. For initial values, use 1 AMU = 1.66x10^-27 kg and c = 3.00x10^8 m/sec.
a 15 m beam is supported (hinged supports) at both ends and is loades with a 50 n weight 4 m from one end and a 100 n weight 8 meters from the same end. what are the forces at the two supports
question1consider a tube filled with air at 17 degc and closed at both ends. let lengthnbspof the tube is 70 cm.nbsp a
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