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How large an inductance, in henrys (H), should be connected in series with a 120 V, 60 W lightbulb if it is to operate normally when the combination is connected across a 240 V, 60 Hz line? (First determine the inductive reactance required. You may neglect the resistance of the inductor and the inductance of the lightbulb.)
A 2.0 cm tall object is placed 15 cm in front of a converging lens with a focal length of magnitude 20 cm. Find the image location and magnification
The mass of Pluto is 0.0025 times that of earth, and its radius is 0.180 times that of earth. Calculate the acceleration of gravity at the surface of Pluto
A velodrome is built for use in the Olympics. The radius of curvature of the surface is 20.1 m. At what angle should the surface be banked
a 1000 N crate is being pushed across a level floor at a constant speed Vi=1.75 m/sec by a force of F=300N at an angle of theta=20 Degrees below horizontal. what is the final velocity of the crate
A 105-kg horizontal platform is a uniform disk of radius 1.77 m and can rotate about the vertical axis through its center. Find the moment of inertia of this system
A meteorite that has a mass equal to 30.8 tonne (1 tonne = 1000 kg) is exhibited in the American Museum of Natural History in New York City, Find the magnitude of the impulse experienced by the meteorite up to the time its kinetic energy was halved
Light of wavelength 6.00 102 nm passes through a slit of width 0.210 mm. Determine the width of the first-order bright fringe
On the Moon\'s surface, lunar astronauts placed a corner reflector, off which a laser beam is periodically reflected. What is the difference in travel time for light that travels only through space to the moon and back and light that travels through..
What is the frequency of the motion? What is the initial potential energy of the block-spring system? What is the initial kinetic energy? What is the amplitude of the oscillation?
A hockey puck struck by a hockey stick is given an initial speed of 10 m/s. how far will the puck slide before stopping
You have a compound microscope with a barrel of length 163 mm. Find the total angular magnification of the microscope for a person whose near point is 25.0 cm away
A cubical block of ice 56.0 cm on an edge is placed on a level floor over a speck of dust. How many cm below the upper surface of the ice
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