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Compute all parts of following question given below:
Question: Contact lenses are placed right on the eyeball, so the distance from the eye to an object (or image) is the same as the distance from the lens to that object. A certain person can see distant objects well, but his near point is 48.0cm from his eyes instead of the usual 25.0 cm.
Part A: Is this person nearsighted or farsighted?
Part B: What type of lens (converging or diverging) is needed to correct his vision?
Part C: If the correcting lenses will be contact lenses, what focal length lens is needed?
Part D: What is the power corresponding to the focal length found in part (C) in diopters?
I am not able to get the correct answer please help me. Thanks.
a pendulum clock with a pendulum made of brass isdesignd to keep accurate at temperature 20 dgreecelcius. what is the magnitude of its error
Assuming biological substances are 98 percent water, estimate the masses of a cell with a diameter of 0.7 µm, a human kidney, and a fly. Take a kidney to be roughly a sphere with a radius of 5.0 cm and a fly to be roughly a cylinder 4.90 mm long a..
A wire encloses an irregularly shaped surface that is symmetric about the z-axis and lies in the xz-plane. A 2A current flows through the wire. What is the area it encloses
q1. a person eats a dessert that contains 220 calories. this calorie unit with a capital c is the one used by
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100 volts of ac are put across a 100-turn transformer primary. What is the power in each coil? What is the ac current drawn by the primary coil?
A football is thrown at an angle of 38 above the horizontal. Assume the ball is throw and received at the same height. what must be the initial speed of the ball
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