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Determine the smallest number of whole logs (p = 730 kg/m3, radius = 0.0750 meter, length = 2.91 meter) that can be used to build a raft that will carry four people, each of whom has a mass of 88.0 kilogram?
A lead ball is dropped into a lake from a diving board 5.6 above the water. After entering the water, it sinks to the bottom with a constant velocity equal to velocity with which it hit the water. The ball reaches the bottom 5 after it is released..
What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20C? Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
A certain Carnot engine produces 200 J of work per cycle, what is the change in entropy of the hot reservoir per cycle
In a physics laboratory experiment, a coil with 220 turns enclosing an area of 12.6 cm^2 is rotated in a time interval of 4.00×10?2 s from a position, What is the average emf induced in the coil
A capacitor C stores charge Q when there is a potential difference V. When a potential difference of V + 12.5Volts is used, an extra 45.50 microC of charge is stored. What is the capacitance C.
what gauge pressure must a pump produce to pump water from the bottom of the grand canyon elevation 730m to indian
an electron emitted by a heated cathode and accelerated through a potential difference of 2.0 kv enters a region with
A car of mass 1500 kg rounds a circular turn of radius 27meter. how fast can thecar travel without skidding
ball rolls horizontally off the edge of a tabletop that is 1.80 m high. It strikes the floor at a point 1.32 m horizontally away from the table edge. (Neglect air resistance.) (a) How long was the ball in the air? s (b) What was its speed at the i..
a 2.9-kg cart is rolling along a frictionless horizontal track towards a 1.6-kg cart that is held initially at rest.
When the tension in a cord is 77.4 N, the wave speed is 132 m/s. What is the linear mass density of the cord
A 330 g air track cart on a horizontal air track is attatched to a string that goes over a pulley with a moment of inertia of 5.00*10^-6 kg*m^2 and a radius of 1.35 cm. Find the acceleration of the cart and the hanging mass
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