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A sprinter of mass 60.5 kg has one foot on the ground, as shown in the figure below. The force F exerted by the ground at point P is directed so that the torque about the body's center of mass is approximately zero. (Let h = 0.845 m.)
(a) Find the angle θ this force makes with the horizontal.
(b) Find the instantaneous acceleration of the center of mass, assuming that it is directed horizontally.
When a potential difference of 12 V is applied to a wire 7.0m long and 0.32mm in diameter the result is an electric current of 2.0 A. What is the resistivity of the wire
A source in vacuum emits electromagnetic radiation in every direction. Calculate the frequency and wavelength of this wave
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the angle between 2 electrons is 65 degrees. if two electrons are each 2.10times10-10 m from a proton find the
In CHEM122 we do an experiment where the charge of an electron may be determined. How many hours does it take for this plating
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A 965 kg car traveling initially with a speed of 25.3 m/s in an easterly direction crashes into the rear end of a(n) 9510 kg truck moving in the same direction at 16.8 m/s. What is the velocity of the truck immediately after the collision
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The dwarf planet Pluto has a mass of 1.2 x 10^22 kg and a radius of 1.15 x 10^6 meters. What is the value of the surface gravity of Pluto in (m/sec)/sec? How does this value compare with the Earth, which is 9.8(m/sec)/sec?
While driving along a country lane with a constant speed of 12 m/s, you encounter a bump in the road that has a cross section. find the normal force on a 67 kg person in your car as you pass over the top of the bump
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