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A virtual image is located 53.5cm behind a concave mirror with focal length 20.0cm .
a. Where is the distance from the mirror to the object?
b. By how much is the image magnified?
An object is 24.2 cm from the center of a silvered spherical glass Christmas tree ornament 5.90 cm in diameter. What is the magnification of its image
Two people, one at each end of a uniform beam that weighs 400N hold the beam at an angle of 25 degrees to the horizontal
In a science fiction movie, a 100 g base ball travelling with a speed of 60 m/s and an electron travelling at a speed of 1.2 x 10^7 m/s, determine the momentum of the base ball
A hydrogen atom emits a photon having an energy of 12.1 eV. What's the frequency of the photon
a sound wave traveling in 26 degrees C air has a pressure amplitude of 0.500 Pa. (assume that the density of air is 1.29 kg/m^3). What is the intensity of the wave
A horizontal aluminum rod 4.8 cm in diameter projects 5.6 cm from a wall. A 1200 kg object is suspended from the end of the rod. Find the vertical deflection of the end of the rod
question what is the fractional change in the resistance of an iron filament when its temperature changes from 25.0degc
The chamber of a rock-tumbling machine is a hollow cylinder withmass 60 g and radius 7.1 cm. The chamberis closed off by end caps in the form of uniform circular diskseach of mass 22 g.
question the refractive indices of materials a and b have a ratio of nanb 1.79. the speed of light in material a is
An automobile has a mass of 1690 kg and a velocity of 23.8 m/s. It makes a rear-end collision with a stationary car whose mass is 2100 kg. determine how far the cars skid before coming to rest
It takes a student t = 5.2 s to push a block m = 6 kg at a constant velocity over a distance of d = 4.6 m. How much power was applied to the block in Watts
The left face of a biconvex lens has a radius of curvature of magnitude10.4cm, and the right face has a radius of curvature of magnitude20.0cm. The index of refraction of the glass is1.47. Calculate the focal length of the lens for light incident f..
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