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A small light has a 1.0 V, 4.8 W bulb that is powered by a transformer concocted to a 120 V dc power source. The secondary coil of the transformer has 20 turns of wire.
A. How many turns does the primary coil have?
B. What resistance is needed in the light to produce a power of 1.0 W?
Calculate the power of the corrective lens required by a hyperopic eye whose near point is at 100.0 cm
Find the change in internal energy using first law of thermodynamics.
A 10.0-g wad of sticky clay is hurled horizontally at a 110-g wooden block initially at rest on a horizontal surface. what was the speed of the clay immediately before impact
Due to the wave nature of light, light shined on a single slit will produce a diffraction pattern, What is the width of the first order fringe
Now a peg is placed 4/5 of the way down the pendulum's path so that when the mass falls to its vertical position it hits and wraps around the peg. As it wraps around the peg and attains its maximum height it ends a distance of 3/5 L below its startin..
Neglect air resistance during the descent. She comes to rest 3.00 m under the surface of the water. Identify the average force that the water exerts on the diver. This force is nonconservative.
A stationary particle of charge q = 2.6 × 10-8 C is placed in a laser beam whose intensity is 2.3 × 103 W/m2, find the maximum magnitudes of electric forces
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1330 Hz. The bird-watcher, however, hears a frequency of 1410 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
During physic lecture a lone ant makes it way across the classroom floor in two distinct stages starting from the wastebasket, Calculate the magnitude and direction of the ants resultant displacement vector
A student presses a book between his hands, as the drawing indicates. The forces that he exerts on the front and back covers of the book are vertical to the book and are horizontal.
A narrow beam of light with wavelengths from 450nm to 700nm is incident perpendicular to one face of a 40.00degrees prism made of crown glass, What is the angular spread of the beam after passing through the prism
A 3 kg block initially traveling at 5 m/s collides with a 1 kg block (initially at rest) sitting near the base of a hill. how high up the hill do the two blocks slide after the collision
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