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A nearsighted person cannot see objects clearly beyond 15.9 cm (her far point).
(a) If she has no astigmatism and contact lenses are prescribed for her, what power lens is required to correct her vision?
A horizontal desk surface measures 2.08 m x 1.73 m. If Earth's magnetic field has magnitude 0.495 mT and is directed 64.8° below horizontal, what is the magnetic flux through the desk surface.
A satellite is on a circular orbit of radius twice of that of Earth. If the Earth surface is considered to be a mirror, what is the speed of the image of the satellite
A motor has coils with a resistance of27and operates from a voltage of242V. When the motor is operating at its maximum speed, the back emf is146V. Find the current in the coils when the motor is first turned on
A traveler in a rocket of proper length 2d sets up a coordinate system S' with its origin O' anchored at the exact middle of the rocket and the x' axis along the rocket's length. At time t' = 0 she ignites a flashbulb at O'.
A sound wave in air has a frequency of 264Hz and travels with a speed of 347m/s. How far apart are the wave crests
When a 2.00-kg object is hung vertically on a certain light spring described by Hooke's law, the spring stretches 2.89 cm. If the 2.00-kg object is removed, how far will the spring stretch if a 1.00-kg block is hung on it
a globular cluster at its farthest point from the galactic center is at a distance of 104 pc.what is its period of
You place your lunch leftovers in the refrigerator. Suppose the refrigerator needs to remove 1.5060E+4 J of thermal energy from your lunch to cool it to the temperature of the inside of the refrigerator, What is the total work done by the compresso..
Two people are carrying a uniform wooden board that is 3.40m long and weighs 145N. What force does the other person lift
A solid disk of radius 7.50 cm and mass 1.25 kg, which is rolling at a speed of 1.50m/s , How long will it take for the disk to come to a stop
Although physics problems often assume that inductors have zero resistance, actual inductors can, in fact, have appreciable resistance. What is the inductance of the inductor
a greased pig is at the top of a 3m high frictionless hill moving at a speed of 5m/s. what is the pig's speed when it gets to the bottom of the hill
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