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The uniform plank ABCweighs 400 N. It is supported by a pin at Aand a cable that runs around the pulley D. Determine the tension in the cable and the components of the pin reaction at A. Note that the tension in the cable is constant.
In order to determine a newly developed material's specific heat conduct, material scientists conduct an experiment. what is the specific heat of the unknown
a vector c1 has a magnitude of 40.0 units and points 35.0deg above the positive x axis. a second vector c2 has a
An energy efficient light bulb, taking in 28.0 W of power, can produce the same level of brightness as a conventional light bulb operating at power 100 W.
You are going to lift an elephant (mass = 2.6 103 kg) over your head (1.9 m vertical displacement). Calculate the work required to do this
a helicopters velocity is given as vt -2t100ms. determine the position and acceleration functions given that x0 9m.
An Olympic skier moving at 20.0 m/s down a 30.0o slope encounters a region of wet snow, of coefficient of friction μk=0.740. Find how far down the slope does she go before stopping
A 4.30-kg ball is dropped from a height of 14.5m above one end of a uniform bar that pivots at its center. The bar has mass 6.50kg and is 4.60m in length. At the other end of the bar sits another 6.00-kg ball, unattached to the bar. The dropped ball ..
Find the charge on sphere A. How far from the dog will the suitcase land.
A quantity of ideal gas at 2°C and 80 kPa occupies a volume of 3.0 m3. How many moles of the gas are present
A lense with a circular aperture of 1cm in diameter is just barely capable of serperating two objects, What's the wavelength of the light from the two objects
A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. Calculate the apparent thickness of the plate as viewed from above the water
An object is dropped from rest into a pit, and accelerates due to gravity at roughly 10 m/s2. How much deeper is the second pit, compared to the first pit
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