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Assume you have a clock that is winding down. A force-free particle will no longer appear to move with constant velocity. Find the direction of the apparent force involved?
a an electron is moving east in a uniform electric field of 1.55nc directed to the west. at point a the velocity of the
Two converging lenses, one with f = 5.0 cm and the other with f = 50 cm, are made into a telescope. What are the magnification of this telescope
Let the building is 50 m tall, the initial horizontal velocity is 9.0 m/s, and the initial vertical velocity is 12.0 m/s. select your coordinates such that the positive y-axis is upward, and the x-axis is to the right, and the origin is at the poi..
A mass of 1.53 kg is attached to a spring and the system is undergoing simple harmonic oscillations by a frequency of 1.95Hz and amplitude of 7.5 cm. What is the speed of the mass when it is 3.00 cm from its equilibrium?
A box starts out at the top of a frictionless ramp, then slides down. The ramp has a height h = 4 m and a slope of 12o with respect to the ground.Find the kinetic energy of the box at the bottom of the ramp
A 5kg steel ball strikes a wall with a speed of 8m/s at an angle of 60.0° with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for 0.200 s, what is the average force exerted by the wall on the ..
A railroad car containing explosive material is initially traveling south at a speed of 4.5 m/s on level ground. The total mass of the car plus explosives is 2.5 104 kg. what is the final speed of the other piece
A hanging copper wire with diameter 1.4mm (1.4e-3m) is initially 0.95 m long. Find the approximate value of the effective spring stiffness of the inter atomic force
In 1980, over San Francisco Bay, a large yo-yo was released from a crane. Suppose the yo-yo was 135 kg, What was the tension in the cord on which it rolled
A wooden block slides directly down an inclined plane, at a constant velocity of 6.0 m/s. Determine how large is the coefficient of kinetic friction
A 8.40 kg object oscillates at the end of a vertical spring that has a spring constant of 2.45 multiply.gif 104 N/m. Calculate the frequency of the dampened oscillation
In February 1955, a paratrooper fell 365 meter from an airplane without being able to open his chute but happened to land in snow, Obtain the magnitude of the impulse on him from snow
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