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A gun shoots small plastic balls. The ball falls 1.2 m while traveling horizontally 5.1 m. Calculate the speed the ball leaves the gun at.
A 7.0mW laser beam has a circular cross section with diameter 0.80mm, What is the maximum radiation pressure that this laser can exert on a mirrored surface
Suppose the speed of light in a vacuum were only 25.5 mi/h. Find the length of the bicycle being ridden at a speed of 20.0 mi/h as measured by an observer sitting on the park bench, given that its proper length is 1.59 m.
A soccer ball is kicked with an initial horizontal velocity of 18 m/s and an initial vertical velocity of 13 m/s, What is the speed of the ball 0.8 seconds after it was kicked, What is the maximum height the ball goes above the ground
A metal slug is dropped from a height of 1/20 RM above the moon's surface. Find the speed with which the slug strikes the moon's surface
For a particular collision you detect the emitted products and find 15 protons, 2 antiprotons, 6 positrons, and 25 neutral particles. How many electrons are also emitted?
A mirror that is spherical has a focal length of -15 cm. what type of image would it be, What is the magnification going to be
What is the minimum speed you must give the air at the top. find its final kinetic energy.
Presume that the strength of the electric ?eld about an isolated point charge has a certain value at a distance of 4 m.
A building has two open doors facing the bay. The walls of the building absorb sound well, so multiple reflections can be ignored. Two people are standing a distance L = 150 m from the wall with the open doors, as pictured.
A circular coil 19.0cm in diameter and containing nine loops lies flat on the ground. Determine the torque on the coil. Express your answer using three significant figures and include the appropriate units
A parallel-plate capacitor is constructed using a dielectric material whose dielectric constant is 3.90 and whose dielectric strength is 1.80 multiply.gif 108 V/m. Find the minimum area of the capacitor plates
One cubic meter of water (see Table 4.4 for the mass density of water) flowing over the Osprey Falls in Yellowstone National Park drops 46 m, what is the temperature increase of the water
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