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A ball tied to the end of a 0.85 meter long string is twirled in a horizontal circle therefore that the centripetal acceleration acting on the ball is 20 m/s2. Find what is the period of the ball motion?
a jet with mass m 90000.0 kg jet accelerates down the runway for takeoff at 1.6 ms2. once off the ground the plane
in 1960, mrs maxwell rogers of tampa florida, reportedly raised one end of a car that had fallen onto her son when a jack failed. If her panic lift effectively raised 4000 N (about a quarter of the car's weight) by 5 cm, how much work did her forc..
How numerous forces act on the brick
a thin lens of focal length 30.0 cm and is used to form an image that is twice the size of the object. Find the object position
An astronaut (mass of 100 kg, with equipment) is headed back to her space station at a speed of 0.750 m/s but at the wrong angle. What is her new direction (relative to the initial direction)
A long rod, insulated to prevent heat loss along its sides, is in perfect thermal contact with boiling water (at atmospheric pressure) at one end and with an ice-water mixture at the other.
A mountain climber jumps a 3.0m wide crevasse by leaping horizontally with the speed of 8.00 m/s. If the climber's direction of motion on landing is 45 degrees, what is height difference between the two sides of the crevasse? Where does the climbe..
An ice skater with mass of 50 kg pushes off from the wall of an ice rink. How much work is done on the skater by the wall
Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
space vehicles traveling through earths radiation belts can intercept a significant number of electrons. the resulting
A charge of 2.19 µC is held fixed at the origin. A second charge of 2.19 µC is released from rest at the position (1.15 m, 0.470 m) . If the mass of the second charge is 2.10 g, what is its speed when it moves infinitely far from the origin?
A copper ball with a radius of 1.1 cm is heated until its diameter has increasedby 0.23 mm. Assuming a roomtemperature of 22°C, find the final temperature of the ball
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