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A 2.18-m-long diving board of mass 13.2kg is 3.00m above the water. It has two attahcments holding it in place. One is located at the very back end of the board, and other is 25.0 cm away from the end.
(a) Assuming that the board has a uniform density, find the force acting on each attachment?
(b) If a diver of mass 69.3kg is standing on the front end, what are the forces acting on the two attachments?
Unpolarized light is incident on a system of 4 polarizers. Where the preferential direction of the second is 20 degrees with respect to the first, What is the intensity of the transmitted light
While running, a person dissipates about 0.524 J of mechanical energy per step per kilogram of body mass. If a 65.5 kg person dissipates a power of 76.6 W during a race, explain how fast is the person running?
A large water tank springs a leak in its side whcih is 10 m above the ground. How far above the leak is the water level in the tank
A research submarine has a 10-cm-diameter window that is 8.5cm thick. What is the submarine's maximum safe depth in salt water
A very long, straight wire has charge per unit length (lambda) . At what distance from the wire is the electric field magnitude equal to E ? How do you solve this problem?
Calculate the de Broglie wavelength for an alpha particle (He-e nucleus) with energy E = 4.2 GeV (which is emitted in the radioactive decay of U-238)
A person can focus clearly only on objects between 37.5cmand 51.0cm from his eyes. Find the powers of the correcting contact lenses needed to correct his closeup vision and distant vision
Estimate how far from a piece of paper you must hold the lens to produce a sharp image of a streetlight 40 ft. Overhead.
A 240 kV power transmission line carrying 500 A is hung from grounded metal towers by ceramic insulators, each having a 1.20, Calculate the power dissipated by 100 of them.
The first two anti-stokes lines in the rotational Raman spectrum of N2 occur at 29709.1 and 29717.1cm^-1. Calculate the bond length of N2 molecule.
Classically, the electron cannot pass through the barrier because E
Tim and Rick both can run at a constant speed Vr and walk at the constant speed Vw, (Vw
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