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A flat bi-metallic strip consists of alluminium riveted to a strip of iron. When heated, the strip will bend. Which metal will be on the outside of the curve? Why?
a tunnel under a river is 2km long. at what frequencies can the air in the tunnel resonate? explain whether it would be
if we have an electron orbiting an atomic nucleus. we may think the electron is doing a circular motion around the
The electricity received at an electric substation has a potential difference of 2.80 10^5V. If the requires output is 440V, what must be the ratio of the turns of the step-down transformation.
In a model AC generator, a 501 turn rectangular coil 10.0 cm by 23 cmrotates at 123 rev/min in a uniformmagnetic field of 0.6 T. What is the maximum emf induced in the coil?
A 4.00-m length of light nylon cord is wound around a uniform cylindrical spool of radius 0.500 m and mass 1.00 kg. How long does it take the spool to reach this angular speed
Mercury flows through a horizontal pipe 0.80 cm in diameter and 0.5 m long. what is the rate of flow through the tube
A transverse harmonic wave travels on a rope
1. a projectile is fired straight upward at 137 ms. how fast is it moving at the instant it reaches the top of its
An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.0 MJ, What is the moment of inertia of the flywheel
Estimate, in vacuum wavelengths, the thickness of a vacuum layer which would permit appreciable tunneling for light incident at 42 degrees and for light incident at 4 degrees.
Estimate the force on a 145-gram baseball if it hits the bat at 50 miles per hour and stays in contact with the bat for 0.1 second
A particle with positive charge q = 3.20e10-18 C moves with a velocity = (4i+ 4j -k ) m/s through a region where both a uniform magnetic field and a uniform electric field exist. Calculate the total force on the moving particle
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