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A contact lens is made of plastic by an index of refraction of 1.48. The lens has an outer radius of curvature of +1.90 cm and an inner radius of curvature of+2.59 cm. What is the focal length of the lens?
An airplane flies in a loop (a circular path in a vertical plane) of radius 150m . The pilot's head always points toward the center of the loop, What is the apparent weight of the pilot at this point
A proton accelerates from rest in a uniform electric field of 670 N/C. At some later time, its speed is 1.38 106 m/s. How far has it moved in that interval
The mercury manometer shown in the figure below is attached to agas cell. What is the freezer temperature
A 100-W driveway light bulb is on 10 hours per day. Assuming thepower company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.
A small rock is thrown vertically upward with a speed of 12.0 from the edge of the roof of a 36.0 tall building. The rock doesn't hit the building on its way back down and lands in the street below. Air resistance can be neglected.
mutual induction can be used as the basis for a metal detector. a typical setup uses two large coils that are parallel
you are driving along a highway at 28.7 ms when you hear a siren. you look in the rear-view mirror and see a police car
q1. a certain elevator cab has a total run of 171 m and a greatest speed is 4.75 msec and it accelerates from rest and
What is the speed of the second asteroid? Now suppose that the first and second asteroids carry charges of 3.68 C and -3.68 C, respectively. How fast would the second asteroid have to be moving in order to occupy the same circular orbit as before?
the speed of sound in aluminum is 5000 ms. we excite standing waves in a rod of aluminum 1.30 m long such that there is
The frames S and S' are in the standard configeration with relativevelocity 0.8c along Ox. What are the time intervals between the two events
a 1210-kg car and a 2240-kg pickup truck approach a curve on the expressway that has a radius of 281m. for the angle i
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