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A uniform diving board, of length is 5.0 m and mass 55 kg, issupported at two points; one support is located 3.4 m from the endof the board and the second is at 4.6 m from the end. What are the forces acting on the board due to the two supports when adiver of mass 65 kg stands at the end of the board over the water? Assume that these forces are vertical.
A 870.0 kg car travelling on a level road at 27.0 m/s(60.5 mi/hr) can stop, locking its wheels, in a distance of 61.0 m(200.1 ft). Find the size of the horizontal force which the carapplies on the road while stopping.
A train is travelling up a 4.0 incline at the speed of 3.25 when the last car breaks free and begins to coast without friction. How long does it take for the last car to come to rest momentarily.
the electric potential immediately outside another charged conducting sphere is 200 v and 10.0 cm farther from the
A 2.0 microF capacitor and a 4.0 microF capacitor are connected in parallet across a 300V potential difference. Calculate the total energy stored in the capacitors
We found the centripetal acceleration of the Earth as it revolves around the Sun. Compute the centripetal acceleration of a point on the surface of the Earth
An L-R-C series circuit consists of a 2.50?F capacitor, a 5.50mH inductor, What is the maximum current through the capacitor
A water tower, vented to the atmosphere, is drained by a pipe that extends to the ground. what is the absolute pressure in the drain pipe at ground level
a 2.70 microf capacitor is charged by a 20.0 v battery. it is disconnected from the battery and then connected to an
q1. a 4.00-kg model rocket is launched expelling 54.9 g of burned fuel from its exhaust at a speed of 690 ms. what is
In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.51 106 m/s. Find the centripetal acceleration of the electron
Eyeglass lenses can be coated on the inner surfaces to reduce the reflection of stray light to the eye. If the lenses are medium flint glass of refractive index 1.62 and the coating is fluorite of refractive index 1.432,
A doubly charged helium atom whose mass is 6.6 * 10^- 27 kg is accelerated by a voltage of 2400 V. What is its period of revolution
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