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A 4.0 m long horizontal boom (of negligible weight) can pivot at the wall to which it is attached and it is supported by a cable hooked 0.6 m from the far end that is at an angle of 37.2 degrees to the boom. A 2,200 N weight hangs at the end of the boom. Use the First and Second Conditions of Equilibrium to find:
(a) the tension i the supporting cable.
(b) the normal force of the wall pushing on the boom.
If the weight of a room full of water is so great, why don't the first floors of houses built over basements all collapse as flooded to the ceiling.
A laser beam aimed from the earth is swept across the face of the moon. what is the angle of divergence of the laser beam
In a slide or movie projector, the film acts as the object whose image is projected on a screen. how wide will the picture be on the screen
An initially motionless test car is accelerated uniformly to 145km/h in 8.28s before striking a simulated deer. The car is in contact with the faux fawn for .815s, after which the car is measured to be traveling at 82.0km/h. What is the magnitude ..
The Earth is constantly being bombarded by cosmic rays, which consist mostly of protons. what is the total charge incident on the atmosphere
Ray decides to paint the outside of his uncle's house. He uses a 4.0-m-long board supported by cables at each end to paint the second floor. find the force that the left cable exerts on the board
Suppose you want to make a scale model of a hydrogen atom. For the nucleus you choose a small ball bearing with a radius of 1.7 mm, What would be the radius of the model
Two small silver spheres, each with a mass of 12.0 g, are separated by 1.00 m. Calculate the fraction of the electrons in one sphere
A current of 16.0A flows through an electric heater operating on 120 V. Compute the power consumption of the electric heater
In Anchorage, collisions of a vehicle with a moose are so common that they are referred to with the abbreviation MVC. What percent of the original kinetic energy is lost in the collision to other forms of energy
A 2.31?102g piece of copper at a temperature of 401.K and a 1.07?102g piece of aluminum at a temperature of 2.17?102K, What is the equilibrium temperature of the mixture
Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 79.1 N, Jill pulls with 76.7 N in the northeast direction, Find the magnitude of the net force the people exert on the donkey
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