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A particle is uncharged and is thrown vertically upward from groundlevel with a speed of 50.0 m/s. As aresult, it attains a maximum height h. The particle is then given a positive charge +q and reaches the samemaximum height h when thrown vertically upward with aspeed of 55.0 m/s. The electricpotential at the height h exceeds the electric potentialat ground level. Finally, the particle is given a negative charge-q. Ignoring air resistance, determine the speed withwhich the negatively charged particle must be thrown verticallyupward, so that it attains exactly the maximum height h. In all three situations, be sure to include the effect of gravity.
A light rope is attached to a block with mass 4.00 kg that rests on a frictionless horizontal surface. Find the mass m of the hanging block
q1. to evaluate the program suppose she runs up a flight of 85 steps each 0.150 m high in 69.0 s. for simplicity ignore
To keep a room at a comfortable 16.0?C , a Carnot heat pump does 310J of work and supplies it with 3840J of heat. How much heat is removed from the outside air by the heat pump
A man tries to determine the distance to an island offshore by using his knowledge of physics and wave motion. how far away is the island
Two identical 0.13 kg blocks (labeled 1 and 2) are initially at rest on a nearly frictionless surface, connected by an unstretched spring, where x2 = 0.04 m.
The proton is replaced with He2+ ion now at a distance of 3 cm from the bead. What is the magnitude of the force experienced by the helium ion
A spaceship of length L moves with a speed 7c/12 with respect to the ground. A ball is thrown from the back of the ship to the front. The speed of the ball with respect to the ship is c/3. Apply the Lorentz transformations to find:
A resting person requires 14.5-L of per hour to maintain metabolic activities. Such a person breathes in 0.510L of air at approximately 32.0 degrees celsius with each breath. The inhaled air is 20.9 percent while the exhaled air is 16.3percent.
At a construction site workers need to know height of some scaffolding. Assuming acceleration due to gravity is 9.8 m/s^2 what is the height of the scaffolding
After having collected samples along the shore all day long, a marine biologist walks back to her campsite, 1.69 km away. Her dog runs ahead, at twice the speed, reaches the campground and turns around until it meets her again. Then, the dog proce..
A student drops two metallic objects into a 32 g steel container holding 169 g of water at 29C. One object is a 486 g cube of copper that is initially at 58C, and the other is a chunk of aluminum that is initially at 6.9C. To the student’s surpris..
The wing of an airplane has an average cross-sectional area of 13 m2 and experiences a lift force of 91,000 N. What is the average difference in the air pressure
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