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Consider a simple transformer that has a 100-turn primary coil and a 1000-turn secndary coil. The primary is connected to a 120-V AC source and the secondary scoil is connected to a light bulb with 1000 ohms of resistance. What is the current through the bulb? What is the power in the bulb? What is the power in the primary coil? What is the current in the primary coil?
solve a 0.880 mev photon is scattered by a free electron such that the scattering angles of the electron and photons are equal. Determine the angles?
A playground carousel is free to rotate about its center on frictionless bearings. Find the resulting angular speed of the carousel and person
q1. a proton orbits a long charged wire making 1.50 times 10 6 revolutions per second. the radius of the orbit is 1.60
Asteroid 433 Eros is one of the largest near-Earth asteroids. For purposes of this problem,assume it is spherical. What is the mass of Eros
An air puck of mass m1 = 0.30 kg is tied to a string and allowed to revolve in a circle of radius R = 1.0 m on a frictionless horizontal table. The other end of the string passes by a hole in the center of the table, and a mass m2 = 1.20 kg is att..
Calculate the average density of a red giant star in grams per cubic centimeter. Take the star's mass to be 2*10^33 gm and its radius to be 3*10^12 cm
Alan leaves Los Angeles at 8:00 a.m to drive San Francisco, 400 mi away. He travels at a steady 50 mph. find Who gets to San Francisco first
For a real train the friction between the car and the track can be described by a friction coefficient, μ. Find out this coefficient assuming that the time it takes for the car to come to rest is 3 s.
You are given a pair of Hemholtz coils, each with radius R = 12 cm, containing 140 turns of wire in each coil. Calculate the magnetic field produced in the center of the space between the coils
a sample of paramagnetic salt contains 2.0 times 1024 atomic dipoles each of dipole moment 1.5 times 10-23 j t-1. the
An object is solid throughout. When the object is completely submerged in ethyl alcohol, its apparent weight is 14.9 N. compute the volume of the object
an object on a horizontal spring oscillates with a period of 1.20 s and an amplitude of 10.0 cm. at t 0 s the object
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