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A concave mirror used by a person who is shaving or applying makeup creates a virtual image of the face that is 1.60 times larger than the person's actual face when the face is 12.0 cm from the mirror. Determine the image distance and focal length.
A hollow spherical shell has mass 7.85kg and radius 0.220m. What is the kinetic energy of the shell after it has turned through 7.00rev
Two ice skaters, Daniel (mass 65.0 kg) and Rebecca (mass 45.0kg), are practicing. Daniel stops to tie his shoelace and,while at rest, find direction of Daniel's velocity after the collision
A discus thrower accelerates a discus from rest to a speed of 24.9 m/s by whirling it through 1.22 rev. Calculate the final angular speed of the discus
A certain telescope has an objective of focal length 1580cm. If the Moon is used as an object, a 1.4 cm long image formed by objective corresponds to what distance, in miles, on the Moon? Suppose 3.8 multiplied by 108 m for the Earth-Moon distance..
If a sound wave traveles throught soft tissue a a velocity of 1.54 mm/microsecond for 2203ms. How far has the sound wave traveled using the echo-ranging formula d=ct
A patient is to be given a blood transfusion. The blood is to flow through a tube from a raised bottle to a needle inserted in the vein. How high h should the bottle be raised above the needle
A particle of rest mass M, travelling at speed v in the x-direction, decays into two photons, moving in the positive and negative x-direction relative to the original particle. What are their energies
A ball is thrown toward a cliff of height h with a speed of 30m/s and an angle of 60? above horizontal, What was the maximum height of the ball
How several 90-rm W, 120-rm V light bulbs can be connected to a 20-rm A, 120-rm V circuit without tripping the circuit breaker.
A 1100 kg block of granite is pulled up an incline with L = 40.0 m at a constant speed of 1.06 m/s by a steam winch. What is the power of the winch
Two cars are each traveling at 27.0 m/s, and they are approaching each other. What frequency of is heard by the driver of the other car
At a distance of 60.0 km from a radio station antenna the electric-field amplitude is 7.60×10?2 V/m. what is the total power output of the station
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