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Imagine you are sitting in a room full of oxygen molecules at 300K. If the room has a volume of 1.2105 m3, what is the number of oxygen molecules in the room?
Fixed in the frame F is a sheet of charge, of uniform surface density sigma, which bisects the dihedral angle formed by the x-y and the y-z planes. What is the surface charge density sigma prime
Far in space, where gravity is negligible, a 480-kg rocket travelling at 95 m/s fires its engines. The figure shows the thrust force as a function of time. The mass lost by the rocket all through these 30s is negligible.
A 40 percent efficient electric power plant produces 900MW of electric power and discharges waste heat into 30 C ocean water. Suppose the waste heat could be used to heat homes during the winter instead of being discharged into the ocean. A typical A..
Old naval ships fired 14 kg cannon balls from a 250 kg cannon. It was very important to stop the recoil of the cannon, since otherwise heavy cannon would go careening across the deck of the ship. In one design, a large spring with spring constant 2..
Light of wavelength 5.30 102 nm passes through a slit of width 0.210 mm. Determine the width of the first-order bright fringe
The tank is shelling at a target that is 4km away and 60m above ground. what should be the release speed of the shell
You throw a ball straight down from an apartment balcony to the ground below. The ball has an initial velocity of 4.95 m/s, Find the height of the balcony
If she hears the rope hit the ground 5.31 seconds later, how deep is the pit? Assume the speed of sound in air 345.0 m/s
Moon effect. Some people believe that the Moon controls their activities. The Moon moves from being directly on the opposite side of Earth from you to be being directly overhead. Assume that the Earth-Moon (center-to-center) distance is 3.82 108 m..
q1. a bumper car with mass m1 108 kg is moving to the right with a velocity of v1 4.6 ms. a second bumper car with
A pile driver falls through a distance of 1.75m before hitting a pile. Find the velocity of the driver as it hits the pile
A ball is thrown upward at 20 m/s from the top of a building, which is 100 meter high. Another ball is thrown downward from the top of the building at 15 m/s. What is their final speed when they hit the ground
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