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A piece of wood floats in oil of density 800 kgm with 25% of its volume above the surface of the oil. If the piece of wood is placed in water, it will float with what percentage of its volume above the water?
A fisherman is reeling in afish. In 9.0 s he winds 3.5 m of fishing line onto a reel whoseradius is 2.3 cm (assumed to be constant as an approximation). Determine the angular speed of the reel
A convertible travels down a straight, level road at a slow speedof 13 km/h. Where is the car when the ball lands
A 24-V battery is connected in series with a resistor and an inductor, with R = 2.4 ? and L = 8.6 H, respectively. Find the energy stored in the inductor when the current reaches its maximum value
A planar loop consisting of four turns of wire, each of which encloses 200 cm2, is oriented vertically to a magnetic field that increases uniformly in magnitude from 10 mT to25 mT in a time of 5.0 ms. what is the resulting induced current in the coil..
A car accelerates uniformly from rest for 20 seconds with anacceleration of 1.5m/s2. determine the acceleration while slowing down
The lifting force exerted on an airplane wing varies jointly as the area of the surface and the square of the planes velocity. Obtain the lift if the speed is decreased to 80 mph
On a frozen pond, a 10 kilogram sled is given a kick that imparts to it an initial speed of v = 2.0 m/s. determine the distance the sled moves before coming to rest
A small sphere of charge q1 = 0.848 µC hangs from the end of a spring as in figure (a). When another small sphere of charge q2 = ?0.594 µC is held beneath the first sphere as in figure (b), the spring stretches by d = 3.18 cm from its original length..
A cylindrical 98.50 ? resistor is made from a coil of copper wire whose total mass is 74.0 g, What is the diameter and lenght of the wire
The coefficient of kinetic friction between a suitcase and the floor is 0.272. how far can it be pushed across the level floor with 630J of work
A 10m^3 tank of compressed natural gas has an absolute pressure of 400 kPa at a temperature of 27 C. What is the mass of the gas in the tank
A baseball is thrown from the roof of a 22.0 m tall building with an initial velocity of mag 12.0 m/s and directed at an angle of 53.1 degrees above the horizontal. (a) What is the speed of the ball just before it strikes the ground?
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