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Question: High-altitude mountain climbers do not eat snow, but always melt it first with a stove. To see why, calculate the energy absorbed from a climber's body under the following conditions. The specific heat of ice is 2100 J/kg·C° , the latent heat of fusion is 333 kJ/kg , the specific heat of water is 4186 J/kg·C°.
A rocket ship is 45.0 m long according to measurements made in its rest frame, and moves at 0.385c by respect to the Earth. Astronaut Naomi sends a laser pulse from the tail of the rocket to the nose, where it reflects off a mirror, and returns to Na..
Two spheres with masses m1 = 820 kg and m2 = 830 kg are separated by 0.230 m. What is the net gravitational force from them on a 3.0 kg sphere located 0.161 m from m1 and 0.069 m from m2? Use a + sign if the direction is towards m2 and a - sign if..
A box is held in place against a rough vertical wall by someone pushing on it with a force directed upward at 30 degree above the horizontal. Find what is the mass of the box
An eastbound subway train accelerates from rest at 1.22 m/s2 along a straight track. How far apart are the trains when the eastbound subway train is traveling at the same speed as the westbound train
A string 2.0 m long is held fixed at both ends. IF a sharp blow is applied to the string at its center, it takes 0.050 s for the pulse to travel to the ends of the string and return to the middle. What are the lowest three standing wave frequencies f..
A 5600 kg mass car is taking a turn at 72 m/s. If the frictional force here is 44,000N, what is the radius of curvature of the turn
At a distance of 6.0 km from a radio transmitter, the amplitude of the oscillating electric field of the radio wave is Eo=.13 V/in, What is the time-averaged energy flux
An engine flywheel initially rotates counterclockwise at 5.39 rotations per second. Then, during 21.3 seconds, its rotation rate changes to 2.11 rotations per second clockwise. Find the flywheel\'s average angular acceleration (including its sign) in..
If the ?rst package travels with constant speed and takes time ΔT = 5.0 days to arrive as measured by the crew member on the space station, what distance does it travel in the frame of reference of the space station? Give your answer in units of l..
Determine the average overall heat transfer coefficient, U, with respect to the inner surface area of the tube
calculate the ground state energy and corresponding speed of a particle of mass 1.0 g in a box of length l10.0 cm
At an outdoor market, a bunch of bananas is set into oscillatory motion with an amplitude of 20.1368 cm on a spring with a spring constant of 11.3993 N/m. What is the speed of the bananas
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