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Two objects of equal mass are moving with equal speeds in the horizontal plane. They collide and move off together (perfectly inelastic collision) at half the value of their original speed.
(a) What is the angle between their initial velocities? {120o}
(b) What percentage of the kinetic energy remains after the collision?
A lead ball is dropped into a lake from a diving board 5.0 mabove the water. How deep is the lake
An Italian chef, who is very scientific in her approach to cooking, measures the specific heat of a porcini mushroom by placing it in a calorimeter filled with 0.678 kg of olive oil at 13.2°C. What is the specific heat of the mushroom
A 10 gauge copper wire carries a current of 24 A. Assuming one free electron per copper atom, calculate the magnitude of the drift velocity of the electrons
A beam of 16MeV deuterons (m=2mp) from a cyclotron falls on a copper block. The beam is equivalent to a current of 15 microA. At what rate is thermal energy produced in the block
Electric bees. As they fly through the air, honeybees can pick up a small amount of electric charge, Find the magnitude of the electric force on the bee in the electric field just above Earth's surface, 130N/C directed vertically downward
Stopping a 747 A 747 jetliner lands and begins to slow to a stop as it moves along the runway. find How far has it traveled in this time
As a laudably skeptical physics student, you want to test Coulomb\'s law, As expected, the predictions of Coulomb\'s law are well confirmed, What is the magnitude of the force
A worker pushes horizontally on a large crate with a force of 185 N, and the crate is moved 4.4 m. How much work was done
How much does it cost to cook food in a 12,000 W oven for 47.6 minutes? Assume electricity costs 8.0 cents per kW·h
A cell phone transmits at a frequency of 1.28 108 Hz. What is the wavelength of the electromagnetic wave used by this phone
A paperweight, when weighed in air, has a weight of W =4.19 N. When completely immersed in water, but, it has a weight of Win water = 3.01 N. Discover the volume of the paperweight.
A human hair is placed directly in front of the opening of a laser pointer. The light has a wavelength of 647.8 nm. Determine the approximate thickness of the hair
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