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When a fighter pilot makes a very quick turn, he experiences a centripetal acceleration. When this acceleration is greater than about 10 × g the pilot will usually lose consciousness ("black out"). Consider a pilot flying at a speed of 990 m/s who wants to make a very sharp turn. What is the minimum radius of curvature that he can take without blacking out?
A human-sized version of the popular "hamster wheel" is shaped like a cylindrical shell and has a radius of 2.25 m. A person running on the wheel applies a horizontal force of 148 N to the bottom of the wheel. What torque does he supply
A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -95?C. By how much does her mass increase
Consider a spacecraft in an elliptical orbit around the earth. At the low point, or perigee, of its orbit, it is 300km above the earth's surface; at the high point, or apogee, it is 2500km above the earth's surface. What if the rockets were fired ..
A destroyer sends a sonar pulse out to detect a submarine directly below the ship in the ocean. If the speed of sound in what is 1517 m/s and it takes 64.13 s for the return pulse to hit the hydrophone on the bottom of the ship, how deep is the su..
A large iron cylinder of mass 265 kg rests so that its circular face rolls along the edge of a table, How far has the system moved along the horizontal
The circuit in the figure below consists of wires at the top and bottom and identical metal springs in the left and right sides. estimate the magnitude of the magnetic field
The wingspan (tip-to-tip) of a Boeing 747 jetliner is 59 m. The plane is flying horizontally at a speed of 200 m/s. Find the emf induced between the wing tips
A block and a gun are firmly affixed to opposite ends of a long glider mounted on a frictionless air track. find the mass of the gun-glider-block system
Jim's dog Sparky runs 45.0 northeast to a tree, then 75.0 west to a second tree, and finally 15.0 south to a third tree. Calculate the direction of Sparky's net displacement
Estimate the time the ball is in contact with the floor to be 0.06 seconds. Compute the average force the floor exerts on the ball.
A student doing an experiment pours 0.160kg of heated copper shot into a 0.355-kg aluminum calorimeter cup containing 0.240kg of water. What was the initial temperature of the shot
The first car has twice the mass of a second car, but only half as much kinetic energy. What were the original speeds of the two cars
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