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an object is placed to the left of aa lens and a real image is formed to the right of the lens. the image is inverted relative to the object and is one half the size of the object. the distance between the object and the image is 90cm.
(a) how far from the lens is the object?
(b) what is the focal length of the lens?
A 13.8-g piece of Styrofoam carries a net charge of -0.72 µC and is suspended in equilibrium above the center of a large, determine the charge per unit area on the plastic sheet
Two 6.0 kg objects head toward each other. Object A moves with a velocity of +7.0 m/s and Object B travels with a velocity of -5.0 m/s. What are their resulting velocities if the collision is perfectly elastic
9.00 of aluminum at and 19.0 of copper are dropped into 51.0 of ethyl alcohol at. What is the initial temperature of Copper
A bullet is fired through a board 10.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board, Find the acceleration of the bullet as it passes through the board
A 75-W, 120-V bulb is connected in parallel with a35-W, 120-V bulb. What is the net resistance
A hydrogen atom is in the inital state ni = n, where n > 1. Find the frequency of the electron's orbital motion
Again assume that the giraffe's blood vessel has a pressure of 400 Torr at the bottom. What is the Young's modulus of the blood vessel's walls
You are studying guitar strings and are able to measure a few of (but not all) the standing wave frequencies for a particular string. what is the highest possible value for the fundamental frequency
A helium-neon laser (? = 630 nm) is used in a single-slit experiment with a screen 7.5 m away from the slit. If the slit is 0.8 mm wide, what is the width of the central bright fringe on the screen
A hand-driven tire pump has a 2.50 cm diameter piston and a maximum stroke of 34.0 cm. What average force do you exert on the piston, neglecting friction and gravity
What is the speed of an electron that has a total energy of zero in a hydrogen atom
A 1348 kg weather rocket is launched straight up. The rocket motor provides a constant acceleration for 13.6 s, then the motor stops. The rocket altitude 29.6 s after launch is 2091 m. You can avoid any effects of air resistance. What was the rock..
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