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Question1
Loudspeaker of mass 25.0kg is suspended a distance of h = 2.40m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.70m. What is tension T in each of the cables?
Use 9.80m/s2 for magnitude of the acceleration due to gravity.
Question2
The drawing shows a large cube (mass = 46 kg) being accelerated across a horizontal frictionless surface by horizontal force vector P. A small cube (mass = 2.5 kg) is in write to with the front surface of large cube and will slide downward unless vector P is sufficiently large. The coefficient of static friction between cubes is 0.71. What is the smallest magnitude that vector P can have in order to keep small cube from sliding downward?
The nonconducting spherical shell is replaced with a thin metal spherical shell of diameter 8 cm and a charge of 1.00, What is the net electric field at 50 cm on the positive x axis
A small bridge is constructed of a single concrete slab which has a length of 14.5 m at 21.7 °C. Calculate the change in the length of the bridge if the temperature changes to 28.7 °C
A motor pulls a ski tow rope moving 10 skiers at a time (each 75kg) up a slope of 20 degrees at a constant 2m/sec speed. find the minimum power the motor must have to accomplish this
Illustrate what is the basis for the industry's legal duty to the surrounding community? In other words, illustrate what is the legal source of the industry's legal duty?
Passengers riding in the Great Six Flags Air Racer are spun around a tall steel tower (see the figure). Calculate the speed of the planes
You have just landed on a planet. You take out a block of mass 245g , release it from rest from a height of 14.01m, What is the acceleration of gravity on this planet
A spring has a spring constant = 40 N/m. It is compressed by a distance 10 cm. calculate Distance along the track to which the cart travels
The lens has a refractive index of 1.30. Find out the difference Δx in the positions where each crosses the principal axis.
Find the gauge pressure at a second point in the line 10.6m lower than the first if the pipe diameter at the second point is twice that at the first
A rock is thrown horizontally with a speed of 19 m/s from a vertical cliff of height 30 m. How far will it land from the base of the cliff
To stop a car, first you require a certain reaction time to begin braking; then the car slows under the constant braking deceleration. Suppose that the total distance moved by your car during these two phases is 50.6 m when its initial speed is 79..
Suppose V rms = 240 V for an alternating current power source. What is the amplitude of the voltage for the source
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