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A 23 meter long log of irregular cross section is lying horizontally, supported by a wall at one end and a cable attached 4.0 meter from the other end. The log weighs is 7.5 x 103 Newton, and the tension in the cable is 6.2 x 103 N. Find where is the log's center of gravity?
A displacement, s, of an object as a function of time, t, is given by , Find an expression for the acceleration of the object
The light shining on a diffraction grating has a wavelength of 463 nm (in vacuum). How many lines per centimeter does the grating have
What is the average energy of the system after many measurements
The full question is: A 4.10 kg object on a horizontal frictionless surface is attached to a spring with spring constant 900 N/m. The object is displaced from equilibrium 50.0 cm horizontally (in the direction) and given an initial velocity of 10...
an electric motor lifts an elevator car at the constant speed of 2 m/s. The power consumed by the motor to perform this task is 40000 W. what is the mass of the elevator
A beam of unpolarized light in air is incident at an angle of 59.0? (with respect to the normal) on a plane glass surface. What is the angle of refraction of the transmitted beam
What is tension in each rope
a what is the rate of energy loss in watts per square meter through a glass window 1.6 mm thick if the outside
A walkway suspended across a hotel lobby is supported at numerous points along its edges by a vertical cable above each point and a vertical column underneath. how much does the point move down
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, and its diameter 1.28 cm. Calculate the probable percent error in the volume
Two snowy peaks are 996 m and 896 m above the valley between them. A ski run extends down from the top of the higher peak and then back up to the top of the lower one, At what speed will she arrive at the top of the lower peak
A circular disc of mass 10 kg is suspended by a wire attached to its centre. Determine the torsional spring constant of the wire
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