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Earth's radius is 6.38 × 106 m, and it completes one revolution every day. What is the tangential speed of a person standing on the equator?
A 150g steel ball and a 300g steel ball each hang from 1.0-m-long strings. At rest, the balls hang side by side, barely touching. To what angle does each ball rebound
Earth has a net charge that produces an electric field of approximately 150 N/C downward at its surface. (a) What is the magnitude and sign of the excess charge, noting the electric field of a conducting sphere is equivalent to a point charge at i..
A placekicker must kick a football from a point 36.0 m (about 40 yards) from the goal. By how much does the ball clear or fall short of clearing the crossbar
An ice skater has by herself a moment of inertia of 5.5 kg m^2 with her arms out, with her arms in it is 5.0 kg m^2. how fast will she be spinning if she brings her arms in a distance of .7 m
Obtain an expression for the velocity
How far above the aim is the point
A bullet is fired through a board 5.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board. Find the total time the bullet is in contact with the board
What is the magnitude of the magnetic field that the spectrometer uses? In the operating room, anesthesiologists use mass spectrometers to monitor the respiratory gases of patients undergoing surgery
A block lies on a horizontal frictionless surface. A horizontal force of 100 N is applied to the block giving rise to an acceleration of 3.0 m/s2. Calculate the distance the block will travel if the force is applied for 10 s
A luge and its rider, with a total mass of 81 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 30 m/s. If a force slows them to a stop at a constant rate of 3.9 m/s2, (a) what magnitude F is required for the ..
A 2 kg mass is placed at rest against a spring of spring constant 5 N/m, which is compressed by 10 cm from its equilibrium position. find the amount of potential energy stored in the spring
A 5.10 kg object on a horizontal frictionless surface is attatched to a spring with spring constant 880 N/m. The object is displaced from equilibrium 50.0 cm horizontally and given an initial velocity of 8.9 m/s back toward the equilibrium point.
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