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A man holds a double-sided spherical mirror so that he is looking directly into its convex surface, 35 cm from his face. The magnification of the image of his face is +0.13. What will be the image distance when he reverses the mirror (looking into its concave surface), maintaining the same distance between the mirror and his face? Be sure to include the algebraic sign (+ or -) with your answer.
The mean distance between earth and the sun is 1.50 multiplied by 1011 m. what is the total power radiated by the sun
At a certain location, the horizontal component of the earth's magnetic field is 2.2 x 10-5 T, due north. A proton moves eastward with just the right speed, so the magnetic force on it balances its weight. Find the speed of the proton.
A hydrogen atom initially in the ground state absorbs a photon, which excites it to the n = 3.00 state. determine the frequency of the photon
A proton accelerates from rest in a uniform electric field of650 N/C. At some later time, its speedis 1.3 106 m/s. Find the magnitude of the acceleration of the proton. How long does it take the proton to reach this speed?
In an EM wave traveling west, the B field oscillates vertically and has a frequency of 84.0 kHz and an rms strength of 6.30×10^?9T. What is the frequency of the electric field? What is its direction?
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.80X106 m/s. Find the centripetal acceleration of the electron
A light string can support a stationary hanging load of 27.0 kg before breaking. What range of speeds can the object have before the string breaks
An entertainer, when performing a bubble trick, forms one bubble inside another. The surface tension of the bubble liquid is ?=0.04 N m-1. calculate the gauge pressure in the inner bubble
A sled weighing 61.0 N is pulled horizontally across snow so that the coefficient of kinetic friction between sled and snow is 0.100. A penguin weighing 67.0 N rides on the sled, as in the figure below. If the coefficient of static friction between p..
Determine the wave's amplitude. Determine the wave's wavelength.Determine the wave's frequency.Determine the wave's speed of propagation. Determine the wave's direction of propagation.
A 9.7 diameter circular loop of wire is in a 0.68T magnetic field. The loop is removed from the field in 0.25sec. Assume that the loop is perpendicular to the magnetic field. What is the average induced emf?
a boeing 747 jumbo jet has a length of 61.3 m. the runway on which the plane lands intersects another runway. the width
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