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A .230 kg baseball is thrown with a speed of 41 m/s. What is the ball's momentum?
If the above ball comes to rest in the catcher's mitt in .085 seconds, how much force does the ball apply on the catcher's mitt? (hint: use the impulse-momentum theorem )
A 1.18 m long sample from a roll of string is measured to have a mass of 1.04 g. find the wavelength of traveling waves on this string which have frequencies of 40.0 Hz and 5.00 Hz
A 600g model rocket is on a cart that is rolling to the right at a speed of 4.5m/s. At what horizontal distance left of the loop should you launch
Water flows out of a large open reservoir through a small pipe that opens to the atmosphere 30 m below the level of the water in the reservoir.
By measuring the spectrum of wavelengths of light from our sun, we know that its surface temperature is 5760 K. Use this information to calculate the diameter of our sun
A 1 530-kg automobile has a wheel base (the distance between the axles) of 2.70 m. Find the force exerted by the ground on each wheel
A peregrine falcon dives at a pigeon. The falcon starts with zero downward velocity and dives with the free-fall acceleration. how long does it take the falcon to intercept the pigeon
An ice cube of volume 10.6 cm3 is at first at a temperature of -9.3°C. How much heat is necessary to convert this ice cube into steam.
In a television, electrons shoot down the picture tube and strike fluorescent material on the screen, causing light to be emitted and producing the picture. assume that a certain set, the electrons are accelerated from rest 2.0 x 10^8 ms-1 in abou..
A 5.000 kg mass starts from rest and slides down on an inclined plane that is 5 degrees above the horizontal. If the body starts from rest and takes 1.25 s to travel a distance along the inclined plane, what is the final velocity of the body
A person pushes a 16.0 kg shopping cart at a constant velocity for a distance of 22.0 m. She pushes in a direction 26.0° below the horizontal. Determine the work done by the pushing force
The third floor of a house is 10.00 m above street level. How much work is required to move a 170kg refrigerator to the third floor.
A bird sits on a high-voltage power line with its feet 4.6 cm apart. What is the potential difference between the bird's feet
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