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An internal explosion breaks an object, initially at rest,into two pieces, one of which has 1.5 times the mass of the other. If 7500 J were released in the explosion, how much kinetic energydid each piece acquire?
The legend that Benjamin Franklin flew a kite as a storm approached is only a legend - he was neither stupid nor suicidal. what is the current through the water layer
Vi = 10-3 m3 chamber of a gas bottle contains some argon gas (atomic weight = 0.040 kg/mole) at a pressure of 104 Pa and a temperature of 22° C. Illustrate what is the number density of atoms in this chamber?
A group of explorers in Antarctica can obtain water only by melting ice. They wish to make 4 cups of coffee, determine the amount of heat required and the amount of power required
Find out that the value of the gravitational field strength
A construction worker with a weight of 820N stands on a roof that is sloped at 16 degrees. find the magnitude of the normal force of the roof on the worker
As you walked on the moon, the earth's gravity would still pull on you weakly and you would still have an earth weight. How large would that earth weight be
A factory worker moves a 28.0kg crate a distance of 4.80m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction between the crate and the floor is 0.300
A record was set for stair climbing when a man ran up the 2000 steps of the Empire State Building in 13 minutes and 10 seconds. what was his average power output during the climb
A wave has an angular frequency of 110 rad/s and a wavelength of 1.80 m. Calculate the angular wave number and the speed of the wave.
The rest energy E of an electron has a rest mass of 9.11 x 10 -31kg. Using Einstein's famous equation E = mc 2, find the rest energy of that electron
Two identical piano wires have a fundamental frequency of 491 Hz when kept under the same tension. when both wires oscillate simultaneously
In a Young's double slit experiment the 10th order dark fringe is located 0.025 m to the side of the central bright fringe on a flat screen. How far away is the screen from the double slit
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