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The far point of a nearsighted person is 5.0 m from her eyes, and she wears contacts that enable her to see distant objects clearly. A tree is 20.3 m away and 1.8 m high.
(a) When she looks through the contacts at the tree, what is its image distance?
(b) How high is the image formed by the contacts?
What is the torque on the root of the tooth about point A.
A solenoid has a cross-sectional area of 2.20 10-4 m2, consists of 200 turns per meter, and carries a current of 0.56 A. Find the average current induced in the coil
A car is safely negotiating an unbanked circular turn at a speed of 29 m/s. The road is dry, and the maximum static frictional force acts on the tires, what speed must the driver slow the car
Write at least one paragraph in which you define focal length, object and image distance and magnification. Explain the difference between real and virtual images
An electron is then fired directly toward the center of the shell, from point P at distance r from the center of the shell (r >> R). What initial speed v0 is needed for the electron to just reach the shell before reversing direction.
A particular organ pipe can resonate at 213 Hz, 355 Hz, and 497 Hz, but not at any other frequencies in between. What is the fundamental frequency of pipe.
The flash of a digital camera totally consumes the energy of an arrray of identical 7 F capicitors when a picture is taken, How many capicitors are in the array
White light shines through a diffraction grating and onto a screen, What is the number of lines per (mm) for this grating and What is the number of lines per (cm)
A communications satellite with a mass of 400 is in a circular orbit about the Earth. The radius of the orbit is 2.8×10^4 as measured from the center of Earth. Compute the weight of the satellite on the surface of the earth.
A factory worker pushes horizontally to the right on a 250 N crate with a force of P = 75.0 N on a horizontal rough floor. A 135 N crate rests on top of the one being pushed and moves along with it. Call the bottom crate {rm A} and the top crate {..
What is the kinetic energy of a carbon atom moving with a speed of 500 m/s.
A galvanometer has an internal resistance of 30?and deflects full scale for a 60??A current, What is the magnitude of this resistor
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