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A 67.0 kg diver is 2.30 m above the water, falling at speed of 6.70 m/s. Calculate her kinetic energy as she hits the water. (Neglect air friction)
A hollow metal sphere carries a charge of 5.0 μC. A second hollow sphere with a radius that is 4 times the size of the first carries a charge of 15.0 μC. How much charge is on the smaller sphere
A cylinder is rolling along the ground without the slipping at 7m/s. It comes to a hill and begins going up. Assume no losses to friction, how high vertically would it go before it stops?
Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
An electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 2.02 mT. obtain the radius of the circular path
A 1.1 kg birdfeeder hangs from a horizontal tree branch. The birdfeeder is attached to the branch at a point that is 1.0 m from the trunk. where the branch attaches to the trunk
An object glides on a horizontal tabletop with a coefficient of kinetic friction of 0.3. If it comes to rest after 1.3 seconds, what was its initial velocity
A spherical 3-mi diameter comet impacts the earth with a velocity of 20 mi/s. Calculate the amount of heat released from the impact site
A 1500 car travelling at 26 suddenly runs out of gas while approaching the valley that looks like an inverted hump. 12m at the left where the care runs out of gas and 19 m at the right were it is headed. What will be the car's speed as it coasts into..
What is formula for the acceleration a of the cart in terms of the tension T, and its mass M? make use of the two equations you found above to eliminate T to give the acceleration of the cart in terms of M, m and g. Compute the numerical value for..
The friction force in the sled is 1000N and the angle between the two ropes is 20 degrees. Explain how hard must each player pull to drag the coach at a steady 2.0 m/s?
Falls resulting in hip fractures are a major cause of injury and even death to the elderly. Typically, hip's speed at impact is about 2. If this can be reduced to 1.30 or less, hip will usually not fracture. One way to do this is by wearing elasti..
A Carnot engine works between two heat reservoirs at temperatures Th = 305 K and Tc = 60 K. How much heat does it give off in each cycle
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