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Sam jumps horizontally from the top of a building that is 20.0 meter high, and hopes to reach a swimming pool that is at the bottom of the building 10.0 meter horizontally from the edge of the building. If he is to reach the pool, determine what must his jumping speed be?
Meteroids often move at high speeds relative to Earth. If meteroids approach Earth closely enough to hit our atmosphere, find the meteroid's kinetic energy
A 0.70-kg mass attached to a vertical spring of force constant 140N/m oscillates with a maximum speed of 0.40m/s, Find the maximum magnitude of the acceleration
Liquid Sodium leaves a nuclear reactor at 800°C and is used as the energy source in a steam power plant. Determine the maximum thermal efficiency of the power plant
a pair of speakers seperated by .7m are driven by the same oscillator at a frequency of 690 hz. an observer originally
A spiral staircase winds up to the top of a tower in an old castle. To measure the height of the tower, a rope is attached to the top of the tower and hung down the center of the staircase. What is the height of the tower
question a metal sphere is insulated electrically and is given a charge. if 25 electrons areadded to the sphere in
children sled down a 44 m -long hill inclined at 25 degrees. at the bottom the slope levels out. if the coefficient of
In February 2004, scientists at Purdue University used a highly sensitive technique to measure the mass of a vaccinia virus (the kind used in smallpox vaccine). What is the mass of the virus in femtograms
Calculate the first-excited state energy (in eV) for an electron in a box (an infinite well) having a width of 0.050 nm
a device with a resistance of 200.0k is connected to a 10v battery. how much power does the device use?a 0.050 mwb 0.50
question a show that the minimum stopping distance for and automobile traveling at speed v is equal to v22microsg where
Jimmy and his cart (with a combined mass of 200 kg) are moving along with a velocity v1 = 20 m/s i. What is the velocity of the combined system of two carts plus occupants after the collision
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