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A draw bridge of length L is being held up by an axel at its pivot and by a chail that is also of length L. The drawbridge has uniform mass.
A) What is the tension in the chain as a function of the angle is makes with the horizontal?
B) Are there any angles that are mathematically impossible? Do these mathematical impossibilities make physical sense?
C) The drawbridge covers a moat of width L, protecting a castle wall that is H high. What is the minimum angle to shoot an arrow so that it only barely clears the wall?
how to Compute the work done by this field on a charge.
RLC alternating current circuit with a 25 ohm resistor, What is the average power when operating at twice the resonant frequency
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Compute the force of gravity between a newborn baby (mass = 4 kg) and the planet Mars (mass = 6.4 x10^23 kg), when Mars is at its position closest to Earth (distance = 8.0 x10^10 m).
A 24N crate is held at rest on a frictioneless incline by a rope that is parallel to the incline. The incline is 25 degrees above the horizontal
A camera has a lens with a focal length of 22.2 cm. When an object is placed 3.55 meters away is being photographed
A garden hose having an internal diameter of 0.720 in. ( 1.8288 cm ) is connected to a lawn sprinkler that consists merely of an enclosure with 36 holes, at what speed does it leave the sprinkler holes
Three equal point charges, each with charge 1.45?C, are placed at the vertices of an equilateral triangle whose sides are of length 0.650m
(a) Three point charges, A = 2.2 µC, B = 7.5 µC, and C = -3.9 µC, are located at the corners of an equilateral triangle. Find the magnitude and direction of the electric field at the position of the 2.2 µC charge.
An atom of mass 3.32*10^(-26)kg oscillates in one dimension at a frequency of 10^13Hz, calculate the quantized energy levels
A student places an object on the 5.0 cm mark of the meter stick. He places a positive lens that he knows has a focal length of 15.0 cm at the 30.0 cm mark on the meter stick. From the data what is the focal length of the negative lens
Jane looking for tarzan, is running at top speed (5.7m/s) and grabs a vine hanginf vertically from a tall tree in the jungle. How high can she swing upward
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