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An artificial lens is implanted in a person's eye to replace a diseased lens. The distance between the artificial lens and the retina is 2.82 cm. In the absence of the lens, an image of a distant object (formed by refraction at the cornea) falls 5.81 cm behind where the implanted lens would be inserted. The lens is designed to put the image of the distant object on the retina. What is the power of the implanted lens? Hint: Consider the image formed by the cornea to be a virtual object. diopters.
A .430 kg block of wood hangs from the ceiling by a string, and a 7.10 x 10^-2 kg wad of putty is thrown straight upward, How high does the putty-block system rise above the original position of the block
A coil has an inductance of 0.45 H and a resistance of 42 ohms. The coil is connected to a 5.6 V ideal battery. At what rate is the energy being dissipated
A photon with a wavelength of 5.70e-11 m is scattered by a loosely bound electron in a metallic target and exits at an angle of 135° from its original direction. What is the wavelength of the scattered photon?
A simple pendulum in a science museum entry hall is 3.51m long, has a 1.25kg bob at its lower end, and swings with an amplitude of 10.50 degrees. How much time does the pendulum take to swing from its extreme right side to its acute left side.
A typical helium nucleus consists of two protons and two neutrons. What is the electric force between the nucleus and one of the electrons orbiting the nucleus
A sled weighing 189N rests on a 15° incline, held in place by static friction. The coefficient of static friction is 0.50.
A horizontal bar of negligible weight has a 55.10 lb weight hanging from the left end and a 72.0 lb weight hanging from the right end. The bar is seen to balance 97.50 in from the left end. Find the length of bar.
When red light in a vacuum is incident at the Brewster angle on a certain type of glass, the angle of refraction is 30.0°. What are the Brewster angle
q1. a loudspeaker is placed between two observers who are 120 m apart along line connecting them. if one observer
In heavy rush-hour traffic you drive in a straight line at 12 m/s for 1.5 minutes, then you have to stop for 3.5 minutes, and finally you drive at 15 m/s for another 2.5 minutes. compute the average velocity between t=0 and t=7.5 minutes.
In seawater, a life preserver with a volume of 4.00×10?2 m^3 will support a 70.0 kg person, find the density of the material composing the life preserver
The concrete wall of a building is 0.08 m thick. The temperature inside the building is 17.5°C, while the temperature outside is 0.0°C. What is the emissivity of the wall
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