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a 4500 kg helicopter accelerates upward at 2.0m/s^2. what lift force is exerted by the air on the propellers?
A puck (mass = 0.3 kg) slides without friction on a horizontal plane. It is attached by a light string (length = 1 m) to a ring on a peg. find the tension in the string as the puck revolves around the peg
Find the magnification of the heater element given that the mirror has a radius curvature of 46 cm and produces an image of the coils 2.6m away from the mirror
A small, 10.0 g insect stand at one end of a thin uniform metal rod which is initially at rest on a frictionless horizontal table. What is the resulting angular speed of the rod
One fragment, whose speed immediately after the explosion is zero, falls vertically. Illustrate what is the horizontal speed of the other fragment?
What is the piston height if the temperature is 30C. How far apart are the plates if there's air between them.
a gymnast is performing a floor routine. In a tumbling run she spins through the air, How much time does this maneuver take
Digital bits on a 12.0-cm diameter audio CD are encoded along an outward spiraling path that starts at radius R1=2.5cm, Determine the total length of the spiraling path
Explain how long does it take the engine to lift the crate a vertical distance of 18.7 m? Friction in the system is negligible.Please provide step-by-step method to solving the problem.
A person pushes a 17.2-kg shopping cart at a constant velocity for a distance of 24.2 m on a flat horizontal surface. Determine the work done by the pushing force
A person in an elevator is holding a 25 kg block by a cord rated to withstand a tension of 335 N. Starting from rest, the elevator begins to move upwards at a constant acceleration and the cord holding the block breaks. What was the least accelera..
One particle has a mass of 4.41 x 10-3 kg and a charge of +6.92 ?C. A second particle has a mass of 6.52 x 10-3 kg and the same charge. The two particles are initially held in place and then released.
Problem 12.30: Singing in the shower. We all sound like great singers in the shower, due to standing waves, What are the wavelengths of the first two overtones for this shower
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