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There are three masses arranged on the vertexes of an equilateral triangle with side L. Each of these masses has a charge Q. When released, these masses move off to infinity. Assuming an equal distribution of energy and equal masses m, what is the speed of each mass at infinity.
A 2.80 kg gold bar at 98 degrees celcius is dropped into 0.34 kg of water at 23 degree celcius. what is the final temperature? assume the specific heatof gold is 129 J/kg
You are standing on the Royal Gorge Bridge, which is 284 meters from the water below. You throw a baseball straight up at 40 miles per hour. how long does it take to hit the water
A flywheel comprises a uniform circular disk with a moment of inertia of 5.70×101 Kg m2. What energy (in Joules) must this force dissipate to stop the wheel
An eagle is flying horizontally at a speed of 3.00 m/s when the fish in her talons wiggles loose and falls into the lake 5.00 m, Calculate the velocity of the fish relative to the water when it hits the water
A major league pitcher of mass 100kg is standing on a skateboard of mass 2.00kg, holding a baseball, What is the speed of the skateboard
The magnitude of the force of friction acting on the block between A and is 1.2N and points A and B are 0.5 m apart. If the kinectic energies of the block at A and B are 4J and 5.6 J, respectively, how much work is done on the block by the force p..
You throw a ball torwards a wall at speed 21 m/s and an angle of 40 degrees above the horizontal. The wall is 22.0 m from the release point of the ball.
A proton enters through a small hole in a metal plate with a speed of 8.00*10^5 m/s at an angle of 55.0°, How far will the proton travel, ?x, before it hits the metal plate
What is the acceleration of a rising hot-air balloon if the ratio of the air density outside the balloon to that inside is 1.39? Neglect the mass of the balloon fabric and the basket.
A spaceship is approaching a space station at a speed of 2.0 105 m/s. The space station has a beacon that emits green light with a frequency of 5.93 1014 Hz. What is the change in this frequency
A nearsighted patient's far point is 0.521 m from her eyes. What is the distance between her eyes and the glasses
a boat with a horizontal tow rope pulls a water skier. She skis off to side, so the rope makes an angle of 15.0 degrees with her direction of motion, How much work is done on the skier by the rope
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