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Suppose you have a concave spherical mirror with a focallength of 10 cm. At what distance must an object be places if its image is to be erect and one and a half times aslarge. What is the radius of curvature of the mirror?
A Klingon spacecraft moves away from Earth at a speed of -.8c. With what speed is the Klingon craft moving as measured by the crew of the Enterprise
The coefficient of performance of a refrigerator is defined as the ratio of heat extracted from the refrigeration compartment to the work required to operate the refrigerator. At what rate will this refrigerator deliver heat to the room in which it..
A 10-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 10 m/s, determine (a) the translational kinetic energy of its center of gravity,
A thin bi-convex lens is to focus the image of an object onto a screen so that the image is life sized. What is the distance d from image to screen
A 2 kg box is raised from rest a distance of 3 m by a vertical force of 110 N. Find the final kinetic energy of the box
An S wave crosses the boundary between two different types of rock. The angle of incidence is 22° and the angle of refraction is 34°. what is the speed past the boundary
An object moves with constant acceleration 4.00 m/s^2 and over a time interval reaches a final velocity of 12.0 m/s. If its initial velocity is 6.00 m/s, what is its displacement during the time interval?
A block with mass m1 = 8.8 kg is on an incline with an angle ? = 39.0° with respect to the horizontal. What is the minimum spring constant of the spring to keep the block from sliding
If the internal energy of a system increases as the result of an adiabatic process, Calculate the work done on or by the system in part (a) if its internal energy increases by 700J
A skier is gliding along at 3.0 m/s on horizontal, frictionless snow. He suddenly starts down a 10° incline. His speed at the bottom is 15 m/s. How long does it take him to reach the bottom
a car accelerates from 23 ms to 28 ms while travelling a distance of 1.97 m due to a 97800-n net force acting on it.
The distance between two telephone poles is d = 53.5 m. When a 1.10-kg bird lands on the telephone wire midway between the poles, how much tension does the bird produce in the wire
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