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Nerve impulses in the human body travel at a speed of about 100 m/s. A 1.6 m tall man accidentally drops a hammer on his toe. How long does it take for the nerve impulse to travel from his toe to his brain?
A car of mass m = 1470 kg is pushed off a cliff of height h = 23 m. If the car lands a distance of 7 m from the base of the cliff, what was the kinetic energy of the car
An infinitely long line of charge has linear charge density 4.00 10-12 C/m. A proton (mass 1.67 10-27 kg, charge +1.60 10-19 C) is 17.0 cm from the line and moving straight toward the line at 3000m/s.
An electric power station is producing 1.2e3 W of power that is to be sent to a small town located 12 km away. Find the power lost in heating the wires
A pitcher is employing a ballistic pendulum to determine the speed of his fastball. A 3.3 kg lump of clay is suspended from a cord 2.0 m long, find the speed of the pitch
A playground merry-go-round of radius R = 1.40 m has a moment of inertia I = 255 kg · m2 and is rotating at 9.0 rev/min about a frictionless vertical axle. What is the new angular speed of the merry-go-round
A man begins pushing a box from rest up a ramp angled at 22 degrees from horizontal, exerting a constant force of 500N, with what average force will it hit the ground
A non-conducting sphere of radius R = 15 cm carries a charge Q = 20 C distributed uniformly throughout its volume. At what distance, measured from the center of the sphere does the electric field reach a value equal to half its maximum value
q1. black holes are suspected while a visible star is being noticeably pulled by an invisible partner that is more
A graph of v(t) is shown for a world-class track sprinter in a 100 m race. What is his average acceleration between 0.0 and 4.0 s, in meters per square second?
An X-ray photon is scattered at an angle of = 180 degree from an electron that is initially at rest. Evaluate the wavelength of the incident X-ray photon
A skateboarder shoots off a ramp with a velocity of 6.8 m/s, directed at an angle of 59° above the horizontal. how far is this point horizontally from the end of the ramp
A contact lens is made of plastic with an index of refractionof 1.60. The lens has a focal length of +23.0 cm, What is the radius of curvature of the outer surface
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