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Suppose you have a converging lens and place an object at do=f/2.
Find the image distance, di using the thin-lens equation. 1/ di + 1/ do = 1/f
Is the image real or virtual
Is it upright or inverted and what is its magnification?
An electron that has energy of approximately8.0e+01 eV moves between rigid walls1.3 nm apart. Discover the precise energy of the electron. Discover the quantum number n for the energy state that the electron occupies.
A 120g ball moving at .30 m/s in the + x-direction is subject to a 0.15N force in the - y-direction for 3.0s. Find the magnitude of the ball's momentum change
A point source emits 27 W of sound. A small microphone intercepts the sound in an area of 0.63 cm2, 289 m from the source. Calculate the power intercepted by the microphone in Watts
There are two categories of ultraviolet light. Ultraviolet A ( UVA ) has a wavelength ranging from 320 nm to 400nm. What are the ranges of the wave numbers for UVB
A bowling ball weighing 71.2 is attached to the ceiling by a 3.50 rope. The ball is pulled to one side and released; it then swings back and forth like a pendulum. As the rope swings through its lowest point, speed of the bowling ball is measured a..
Two loudspeakers emit sound waves along the x-axis. A listener in front of both speakers hears a maximum sound intensity, What is the phase difference between the speakers
one end of a nylon rope is tied to a stationary support at the top of a vertical mine shaft of depth 85.0m . the rope
You compress a spring with k = 3000 N/m a distance of 0.2 m with a block of mass 4 kg. You then release the block. It slides along a frictionless surface and then goes up an incline of 35 degrees. How far up the incline (along the hypotenuse of the t..
a solid sphere of radius r 40cm has a total positive charge of 26 mc uniformly distributed throughout its volume the
A projectile fired from a gun has initial horizontal and vertical components of velocity equal to 30 m/s and 40 m/s, respectively. Determine the Range of the projectile
A constant, uniform magentic field B=2T that fillls all space is directed into the plane of the page. a square loop of wire of side 0.5m and resistance 10 ohms moves in the plane of the page with speed 4 m/s. What is the current if the movement is..
Two concrete spans of a 190 m long bridge are placed end to end so that no room is allowed for expansion. what is the height y to which the spans rise when they buckle
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