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Primary coil of a 1000 Watt, 120 Volt to 220 Volt set-up transformers has 400 turns. Determine number of turns in the secondary coil of this transformer and the currents in both coils.
Halley's comet moves about the Sunin an elliptical orbit, with its closest approach to the Sun being0.59 A.U. and its greatest distance being 35 A.U. what is its speed when it isfarthest from the Sun
A solenoid that is 93.2 cm long has a radius of 2.71 cm and a winding of 1150 turns; Calculate the magnitude of the magnetic field inside the solenoid
The mirrors used in a particular type of laser are 99.99% reflecting. What is the force due to radiation pressure on one of the mirrors
A 0.4-kg object is traveling to the right (in the positive direction) with a speed of 2 m/s. obtain the magnitude of the impulse (in N-s) acting on the object
A laser beam strikes one end of a slab of material, Determine the number of internal reflections of the beam before it emerges from the opposite end of the slab
How much work done against force of gravity
A train pulls away from a station with a constant acceleration of 0.42 m/s2. What is the slowest constant speed at which she can run and catch the train
Romeo is chucking pebbles gently up to Juliet's window, and he wants the pebbles to hit the window with only a horizontal component of velocity. he is standing at the edge of a rose garden 4.5 m below her window and 5 m from the base of the wall. How..
A 500-g block is released from rest and slides down a frictionless track that begins 2.40 m above the horizontal, Find the maximum distance the spring is compressed
An open-pit coal mine consumes 71hectares of land, down to a depth of 23m, each year. What volume of earth, in cubic kilometres, is separate in this time.
a surface is so constructed that at all points on the surface the vector points outward. therefore it can be said
Assuming a planet of mass m moves around the Sun (with mass Ms) in a circular orbit of radius R, find its rotation period. explain how the period changes if the mass of the planet is doubled
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