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A man holds a double-sided spherical mirror therefore that he is looking directly into its convex surface, 55 cm from his face. The magnification of the image of his face is +0.23. What will be the image distance when he reverses the mirror (looking into its concave surface), maintaining the similar distance among the mirror and his face? Be sure to include the algebraic sign (+ or -) with your answer.
We can approximate an electron moving in a nanowire as a one-dimensional infinite square-well potential. Let the wire be 2 μm long. The nanowire is cooled to a temperature of 13K, What are the three lowest energy levels of the electrons
The average lifetime of a pi meson in its own frame of reference is 2.6×10-8 s. (This is the proper lifetime.), What is the average distance it travels before decaying
A lumberjack (mass = 98 kg) is standing at rest on one end of afloating log (mass = 290 kg)that is also at rest. The lumberjack runs to the other end of thelog, attaining a velocity of +3.5 m/s relative to theshore, and then hops onto an identical..
As a highway engineer, you're asked to design a runaway truck lane on a mountain road. How long should you make the lane
answer should be symbolica uniform rod is resting on a frictionless table when it is suddenly struck at one end by a
What is the mass of a puppy that sits on the other piston and balances the person?
We move a square loop of wire 2.1 cm on a side into a region of uniform magnetic field of 1.0 T with the plane of the loop, find the force on the loop as it just enters the magnetic field region
A photon of wavelength 0.91000 nm strikesa free electron that is initially at rest. The photon is scattered straight backward. What is the speed of the recoil electron after the collision
Find the time it takes for a telephone call to go by way of satellite between these cities. Ignore the curvature of the earth.
new york is roughly 3000 miles from seattle. when it is 800 a.m. in seattle it is 1100 a.m. in new york. using this
in music two notes are said to be an octave apart when one note is exactly twice the frequency of the other. suppose
An apple crate with a mass of 20 kg stands on a frictionless horizontal surface. A force F = 14.5 N is applied to the crate, find the normal force exerted by the surface on the crate
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