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How far from the lens should an object be placed so that its (virtual) image is at the near-point distance of 25 if the magnification is 8X?
A puck slides across a smooth, level tabletop at height H at a constant speed vo. It slides off the edge of the table and hits the floor a distance x away as shown in the figure. What is the algebraic relationship between the distances x and H?
A 0.30-kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.20-kg puck that is initially moving along the x-axis with a velocity of7.1 m/s. Find the fraction of kinetic energy lost in the collision
The space shuttle is in a 250km -high circular orbit. It needs to reach a 700km -high circular orbit to catch the Hubble Space Telescope for repairs. How much energy is required to boost it to the new orbit
An 81 kg person puts on a life jacket, jumps into the water, and floats. The jacket has a volume of 3.1 x 10-2 m3, What is the density of the life jacket
An engine transfers 2.5 X 103 J of energy from a hot reservoir during a cycle and has an efficiency of 0.3. How much heat is transferred as exhaust to a cold reservoir
what is the dimension of gravitational force and what is the dimension of acceleration
A force of 78gm acts at the point (2, 3, 5) the direction cosines of its line of action being as 2:2:1 find the magnitude of its moment about the joining the origin to the point (2, 3, 4).
Illustrate what is the magnitude of the change in momentum of the ball while in contact with the bat if the ball leaves with a velocity of (a) 18 m/s, vertically downward, and (b) 18 m/s, horizontally back toward the pitcher?
Two metal balls are hung from strings. The first ball, 0.09 kg, is pulled to the side and released so that it strikes the second ball with a speed of 1.62 m/s. What is the mass of the second ball
Two long, straight, parallel wires of length 3.6 m carry parallel currents of 3.2 A and 0.9 A. What is the magnitude of the force between the two wires
A silver wire has resistivity ? = 1.96 × 10-8 ?·m and a cross-sectional area of 5.00 mm2. What is the displacement current in the wire at that time
A bucket filled with water has a mass of 54 kg and is hanging from a rope that is wound around .050 m radius stationary cylinder. if the cylinder does not rotate and bucket hangs straight down, what is the magnitude of the torque the bucket produc..
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