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The horizontal rod OA rotates about a vertical shaft according to the relation ? = 10t, where ? and t are expressed in rad/s and seconds, respectively. A 0.5-lb collar B is held by a cord with a breaking strength of 4 lb. Neglecting friction, determine, immediately after the cord breaks,
(a) The relative acceleration of the collar with respect to the rod,
(b) The magnitude of the horizontal force exerted on the collar by the rod.
A copper rod has a length of 1.6 m and a cross-sectional area of 3.9 10-4 m2. What is the mass of ice per second that melts
Two parallel slits are illumining by light composed of two wavelengths, one of which is 654 nm. On a viewing screen, the light whose wavelength is known produces its third dark fringe at the similar place where the light whose wavelength is unknown p..
A 15m length of wire consists of 6.0m of copper followed by 9.0m of aluminum, both diameter 1.4mm. A voltage difference of 70mV is placed across the composite wire, What is the total resistance (sum) of the two wires
One of the most efficient engines ever built is a coal-fired steamturbine in the Ohio valley, driving an electric generator as itoperates between 1870°C and 430°C. What is its maximum theoretical efficiency
a 5.0 box is on a frictionless 45 slope and is connected via a massless string over a massless frictionless pulley to a
A charge of 6.00mC is placed at each corner of a square 0.260m on a side. Decide the magnitude of the force on each charge. Decide the direction of the force on each charge.
You then kick the ball with the same initial velocity and at the same angle to the horizontal. This time, however, you kick it up a 15 degree slope. What is the horizontal range of the ball's travel
The viscous force on an oil drop is measured to be equal to 3.0X10^-13 N when the drop is falling through the air with a speed of 4.5X10^-4 m/s. If the radius of the drop is 2.5X10-6 m, what is the viscosity of air?
the positronium atom consists of an electron positron pair bound by their Coluomb potential, if the view the particales as moving in a classical circular orbit what is the radius of the orbit
A bowling ball of mass 7.20 kilogram and radius 10 centimeter rolls without slipping down a lane at 3.50 m/s. Compute its total kinetic energy
a science student is riding on a flatcar of a train traveling along a straight horizontal track at a constant speed of
Find the present worth of all the costs if i - 10%. Assume all costs incurred to be at the end of the respective year.
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