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An object of size 3cm is placed 14cm in front of a concave lens of focal length 21 cm. decsribe the image formed by the lens. What happens , if the object is moved further away from the lens?
A dentist uses a small mirror with a radius of 36 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 16 mm from the tooth, what is the magnification of an image.
Light of wavelength 550nm in air is found to travel at 1.96*10^8 m/s in a certain liquid. Determine the wavelength of the light in the liquid
A student is running at her top speed of 5.2m/s to catch a bus, which is stopped at the bus stop. For what time does she have to run in that case
A current with sinusoidal time-dependence, whose peak value is 9.55 A and frequency is 255 cycles per second, Calculate the average power dissipated by the loop
Two long straight parallel wires are 12cm apart. Wire A carries 1.5A current. Wire B's current is 4.0A in the same direction, Determine the magnetic field due to wire B at the position of wire A
A 17.0 kg monkey hangs from a cord suspended from the ceiling of an elevator. What was the direction of the elevator's acceleration
You may also assume that v_0 gg sqrt{2gL}, so that the change in hammer's gravitational potential energy, as it drives the nail into the block, is insignificant.
A .30-06 rifle fires a bullet with a mass of 10 g at a velocity of 800 m/s. If the rifle has a mass of 4 kg, what is its recoil speed
A 9.27-m-long glider with a mass of 545.48 kg (including the passengers) is gliding horizontally through the air at 29.02 m/s, What is the glider's horizontal velocity
A 155 g copper bowl contains 245 g of water, both at 20°C. A very hot 300 g copper cylinder is dropped into the water, causing the water to boil, with 5 g being converted to steam. The final temperature of the system is 100°C. Neglect energy trans..
Two metal balls are hung from strings. The first ball, 0.14 kg, is pulled to the side and released, What is the mass of the second ball
Brewed coffee is often too hot to drink right away. You can cool it with an ice cube, but this dilutes it. compute the final temperature of the coffee
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