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A roof tile falls from rest from the top of a building. An observer inside the building notices that it takes 0.19 s for the tile to pass her window, which has a height of 1.3 m. How far above the top of this window is the roof?
An astronaut weighs 7*10^2 N on the surface of the earth (M earth=5.98*10^24 kg). What is her weight 7.70*10^6 m above the earth.
The box is cubical, measuring 0.350 m on a side, and the thickness of the walls is 3..00 x 10^-2 m. In one day, 3.10 x10^6 J of heat is conducted through the six walls. Find the thermal conductivity of the material from which the box is made.
A 3.2 kilogram ball strikes a wall with a velocity of 6.4 m/s to the left. determine what constant force exerted on ball by the wall
While warming up for a match, a tennis player stands at the baseline of the court, 11.9 m away from the net, how far below the top of the net does it hit
At one point in a pipeline, water's speed is 3.30 m/s and the gauge pressure is 4.00×10^4 Pa. Find out the gauge pressure at a second point in the line 13.0 m lower than the first if the pipe diameter at the second point is twice that at the first.
A 14.4 cm long tendon was found to stretch 3.79 mm by a force of 11.1 N. Calculate the Young's modulus of this tendon
While two forces act on a particle, it moves at constant velocity v→ = (3m/s)i^ - (4m/s)j^. One of the forces is f→1= (2N)i^ + (-6N)j^. What are other forces?
Sunlight falls on two polarizers with their polarization axes oriented 57° to one another. What fraction of the light intensity is transmitted
A well-insulated electric water heater warms 113 kg of water from 20.0° C to 51.0° C in 33.0 min. Find the resistance of its heating element
Assume that the total energy E of an electron greatly exceeds its rest energy. If a photon has a wavelength equal to the de Broglie wavelength of the electron, what is the photon's energy
two trains a and b are approaching each other. the observer is in train a which is going west at 40 miles per hour.
a. a thin rod of length 9.2 m and mass 16 kg is supported at a 31 degrees incline. one support is 2.4 m and the other
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