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It is found experimentally that the electric field in a certain region of Earth's atmosphere is directed vertically down. At an altitude of 350 m the field has magnitude 60.0 N/C. At an altitude of 200 m, the magnitude is 100 N/C. Find the net amount of charge contained in a cube 150 m on edge, with horizontal faces at altitudes of 200 and 350 m. Neglect the curvature of Earth.
if oxygen molecules are more massive than the nitrogen molecules, is the rms speed of the O2 molecules greater than, less than, or euqls to rms speed of the n2 molecules.
Suppose that you wish to fabricate a uniform wire out of 1.00 g of copper. Assume the wire has a resistance R = 0.700 , and all of the copper is used. Illustrate what will be the length of the wire?
A rifle with the barrel length of 62cm fires a 12g bullet with a horizontal speed of 380m/s. The bullet strikes a block of wood and penetrates to a depth of 14cm. What resistive force (assumed to be constant) does the wood exert on the bullet? How lo..
An object with mass m1=%.00kg rests on a frictionless horizontal table and is connected to a table that passes over a pulley and is then fastened to a hanging object with mass m2=10.0kg. Find out the acceleration of each object and the tension cab..
What friction torque is necessary to reduce its angular speed from 90.0 {rm rpm} to 45.0 {rm rpm} in a time interval of 32.0 {rm s}.
Explain how would the amounts relating to the lease be shown on Lessor's balance sheet at 31 December 20X3? Assume that the lessor has an unclassified balance sheet.
Two particles of masses m and 3.00m are moving toward each other along the x-axis with the same speed v. They undergo a head on elastic collision and rebound along the x- axis. Find out the final speed of the heavier object.
A spherical balloon has a radius of 8.45 m and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of balloon have a mass of 1300 kg? Overlook the bouyant force on the cargo volume itself.
illuminate the object with the flashlight. One way to produce artificial gravity in a space station is to spin it.
Calculate the smallest coefficient of static friction necessary for mass A to remain stationary.
The ball strikes the floor at a speed of 7.8 m/s. Illustrate what was the initial speed of the ball? Assume that air resistance is negligible.
What is the attractive force between the protons. A rocket rises vertically, from rest, with the acceleration of 3.0 m/s2 until it runs out of fuel at an altitude of 1100 m. After this point, its acceleration is that of gravity, downward.
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