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1) a) What power correction lens is needed to correct the vision of a farsighted eye that has a near point of 75cm to enable the person to clearly see objects that are 25 cm in front of the eye. Express your answer in diopters.
b) What correction lens is needed for a nearsighted eye that has a far-point of 275cm? Express your answer in diopters.
c) A myopic person uses a -0.658 diopters lens. What is the far-point for the eye of that person? Express the answer in cm.
On an ice rink two skaters of equal mass grab hands and spin in a mutual circle once every 2.7s. how hard are they pulling on one another
A 400 cm rope under a tension of 90 N is set into oscillation. The mass density of the rope is 170 g/cm. What is the frequency of the first harmonic mode (m = 2)?
Express the highest load in terms of theta_min and other quantities given in the problem introduction.
A stunt pilot weighing 0.70 kN performs a vertical circular dive of radius 0.80 km. What force does the plane exert on the pilot
A stamp collector is viewing a stamp by a magnifying glass held next to her eye. Her near point is 25 cm from her eye. What is the refractive power of a magnifying glass that has an angular magnification of 6.0 when the image of the stamp is located ..
A field mouse trying to escape a hawk runs east for 6.0m , darts southeast for 4.0m , then drops 1.0m down a hole into its burrow. What is the magnitude of the net displacement of the mouse
In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.12 106 m/s. Find the centripetal acceleration of the electron
A person on a rotating stool with arms stretched out rotates at an angular speed of 5.00 rad/s. By what factor does the moment of inertia change
a model airplane with mass 0.740 kg is tethered to the ground by a wire so that it flies in a horizontal circle 30.2 m
A heavy crate is attached to the wall by a light rope, as shown in the figure. Another rope hangs off the opposite edge of the box. which rope will break
The 700-lb flywheel of a small hoisting engine has a radius of gyration of 24 in. If the power is cut off when the angular velocity of the flywheel is 100 rpm clockwise, determine the time required for the system to come torest.
A square loop and a rectangular loop are each made from the same length of wire. Each loop contains a single turn, and carriesthe same amount of current. The loops are placed in the sameuniform magnetic field.
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