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A pendulum is constructed from a thin, rigid, and uniform rod with a small sphere attached to the end opposite the pivot. This arrangement is a good approximation to a simple pendulum (period =3.72 s), because the mass of the sphere (lead) is much greater than the mass of the rod (aluminum). When the sphere is removed, the pendulum is no longer a simple pendulum, however is then a physical pendulum. What is the period of the physical pendulum?
Hurricane winds of 95 m/h are blowing over the flat roof of a well sealed house. What is the difference in air pressure between the inside and outside of the house
Certain insects, such as the water bug, are sufficiently lightweight that they can run on top of water without breaking the surface tension. What is the weight of bug B
An air mass has a temperature of 68F at 970hPa with a mixing ratio of 5 g kg-1. Without any condensation or mixing the air mass now has a temperature of 50F and a pressure of 750hPa.
The box is taken up a mountain where the air pressure outside the box is 8.00 104 Pa. The inside of the box is completely evacuated. Elucidate the magnitude of the force required to pull the lid off the box?
A model airplane with mass 0.757 kg is tethered to the ground by a wire so that it flies in a horizontal circle 29.7 m in radius. The airplane engine provides a net thrust of 0.798 N perpendicular to the tethering wire.
q1. a man pushes the lawn mower on a level lawn with a force of 240 n. if 40 percent of this force is directed downward
The mass of the ball is 1.65 kg, and the mass of the block is 2.27 kg. The length of the wire is 1.23 m. What is the algebraic expression for the speed of the ball just before the collision with the block
In the process of changing a flat tire, a motorist uses a hydraulic jack. She begins by applying a force of 59 N to the input piston, which has a radius r1. As a result, the output plunger, which has a radius r2, applies a force to the car. The ra..
A truck traveling at 60 mi/h brakes to a stop in 180 ft. What was the stopping time
Two particles, with charges of 20 nC and -20nC, are placed at the points with coordinates (0, 4 cm) and (0, -4 cm). A particle with charge 10 nC is located at the origin. Find the electric potential energy of the configuration of the three fixed ch..
Two kilograms of water at 19 degrees C is heated to 21 degrees C. What was the entropy change for the system
When responding to sound, the human eardrum vibrates about its equilibrium position. What is the maximum acceleration of the eardrum
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