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The generator at a power plant produces AC at 27,000 V. A transformer steps this up to 355,000 V for transmission over power lines. If there are1,950 turns of wire in the input coil of the transformer, how many turns must there be in the output coil?
turns
A photon having 27 keV scatters from a free electron at rest. What is the maximum energy that the electron can obtain
A 18.0 kg loudspeaker is suspended 2.40m below the ceiling by two 4.10m long cables that angle outward at equal angles. What is the tension of each of the cables.
An ideal step-down transformer has a primary coil of 300 turns and a secondary coil of 28 turns. What is the voltage in the secondary coil
Suppose you could pack neutrons (mass = 1.67 × 10-27 kg) inside a small ball of radius 0.026 m in the same way as neutrons, Approximately how many neutrons would fit inside the ball
Birds resting on high-voltage power lines are a common sight. The copper wire on which a bird stands is 2.5 cm in diameter and carries a current of 48 A. calculate the potential difference between its feet
What is the Hall effect, give a real life example, list its applications, When an electric light bulb is operated on a low frequency AC, they noticeably flicker
A force vector points at an angle of 64.9 ° above the +x axis. It has a y component of +276 Newton's (N). Find out (a) magnitude and (b) x component of the force vector.
A paperweight, when weighed in air, has a weight of W = 16.1 N. When completely immersed in water, Find the volume of the paperweight
A crate with mass 36.0 initially at rest on a warehouse floor is acted on by a net horizontal force of 142. Explain how far does it travel in 12s and what is its speed at that time?
An unstable particle with a mass equal to 3.34 ? 10-27 kg is initially at rest. The particle decays into two fragments that fly off with velocities of 0.988c and -0.865c, respectively. Find the masses of the fragments
with what speed would the arrow leave the bow.
Tendons are strong elastic fibers that attach muscles to bones. To a reasonable approximation, they obey Hooke's law. How much energy is stored in it at that point
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