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Two converging lenses, the first with focal length 25 cm and the second with focal length 20 cm, are separated by 30 cm. A 4.0 cm tall object is placed 50 cm in front of the first lens. What is the height of the final image?
A38.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of20.0m. What force does the seat exert on the child at the highest point of the ride
The wheels of an automobile are locked as it slides to a stop from an initial speed of 30.0 m/s, approximately how long does it take the car to stop
A light spring of force constant k = 156 N/m rests vertically on the bottom of a large beaker of water. A 5.55-kg block of wood (density = 650 kg/m3) is connected to the spring, and block-spring system is allowed to come to static equilibrium. Wha..
In a section of horizontal pipe with a diameter of 3.0 cm, the pressure is 100 kPa and water is flowing with a speed of 1.5 m/s. What is the pressure in the narrower region
Illustrate how much ice must melt in order to cool the hot water down to this temperature?
An arc 14.0 cm in length on the circumfrence of a circle subtends an angle of 126 degrees. What is the radius of the cirlce
Over the course of a multi-stage 4080-km bicycle race, the front wheel of an athlete's bicycle makes 2.00 106 revolutions. How many revolutions would the wheel have made during the race
A box of weight w = 2 N accelerates down a rough plane that is inclined at an angle 30 degrees above the horizontal, What is the work done on the box by the force of kinetic friction
A uniform 1200N beam that is 3.50 m long is suspended horizontally by two vertical wires at its ends. A small but dense 550 N weight is placed on the beam 2.00m from one end.
A 2.45m long copper wire has 1.35V across its ends. Find the electric field strength within the wire
Two forces act on a 100-kg block resting on the floor. The first force, pointing parallel to the floor, What is the magnitude of the net force on the block
A stone is thrown horizontally from the roof of a tall building with a speed of 23.3 m/s. how far from the building will the stone land
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