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A human sprinter of mass 65kg starts a run at the maximum possible acceleration, pushing backward against a block set in the track. What is the force of his foot on the block?
a wrecking yard inventor wants to pick up cars by charging a 0.400 m diameter ball and inducing an equal and opposite
Liquid nitrogen boils at 77.00 K. Would this experiment needs to be altered if we used water, which boils at 373 K? Why.
Grant Hill jumps 1.3m straight up into the air to slam dunk a basketball into the net. With what speed did he leave the floor
q1. charge of uniform density 80 ncm3 is distributed throughout a hollow cylinder region formed by two coaxial
A challenge gaining prominence throughout the planet is the increased need for \"green\" or sustainable energy. In certain parts of the country, how much energy does the wind turbine generate
Consider a Ferris wheel in which the chairs hang down from the main wheel via a cable. The cable is 2.0 m long and the wheel is 24 m in diameter. Find the speed of the chair
A block of wood floats on water. 80% of the wood is submerged in water. Now a layer of oil is carefully poured on top of the water to a depth that more than covers the block. what is the density of the oil
An aluminum wire having a cross-sectional area equal to 4.90 10-6 m2 carries a current of 8.00 A. Find the drift speed of the electrons in the wire
At what temperature is the speed of sound in helium (ideal gas, = 1.67, atomic mass = 4.003 u) the same as its speed in oxygen gas at 4.78 oC
If the flywheel on my truck has a mass of 22.8Kg a radius of .4572 meters and is rotating at 250 revolutions per minute
A roller coaster at the Six Flags Great America amusement park in Gurnee, Illinois, incorporates some clever design technology and some basic physics. What is the radius of the arc of the teardrop at the top
A bat flies toward a wall at a speed of 5.5 m/s. As it flies, the bat emits an ultrasonic sound wave with frequency 29.0 kHz. What frequency does the bat hear in the reflected wave
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