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A worker pushes a 50 kilogram crate along a horizontal floor by a force of 90 Newton at an angle of 240o with the positive x-axis. If the motion is in the x-direction, evaluate what the acceleration of the crate.
Two traveling waves with the same amplitude A, frequency f, and wavelength, but out of phase with each other by one quarter of a wavelength, aWrite the equation of the resulting traveling wave
a 0.400 ice puck moving east with a speed of 2.50 has a head-on collision with a 0.900puck initially at rest. what
A photon with a wavelength of 5.70e-11 m is scattered by a loosely bound electron in a metallic target and exits at an angle of 135° from its original direction. What is the wavelength of the scattered photon?
Two students decided to fling balloons filled with M1=68.1 grams ofice water at coeds who are sun batheing on the roof of a sororityhouse two blocks east of the physics bulding. find the maximum angular velocity achieved by the trebuchet
An iron tower in is 399 meters tall on a cold day (T = -6.7 degrees Celsius). What is its height of the tower on a hot day while the temperature is 31.5 degrees Celsius.
A tennis ball is thrown out a window 28m above the ground at an initial velocity of 15.0 m/s and 20 degrees below the horizontal. How far does the ball move horizontally before it hits the ground?
Four equal point charges of +3 μC are located at the four corners of a square that is 40 centimeter on a side. Determine the force of any of the charges
An empty 1390 kilogram vehicle has its CM2.30 meter behind the front of the car. Obtain how far from the front of the car will the CM be when two people sit in the front seat 2.80 meter from the front of the vehicle
A spring has of constant k=1200 N/m is compressed by 8.0cm. A 2.5kg block is placed against the compressed spring. find the resulting kinetic energy and speed of the block
An intergalactic rock star bangs his drum every 1.10 s. A person on earth measures that the time between beats is 2.10 s
The centralized model for generating electricity
A speaker fixed to a moving platform moves toward a wall, emitting a steady sound with a frequency of 240 Hertz. Determine how fast should the platform move for the person to detect a beat frequency of 2.0 Hertz
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