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Assume an inductor is contracted of copper wire of length 50m that has a cross-sectional area of 7 x 10-2m2 . (Copper has a resistivity of 2 x10-8 Ω.m ) What is the resistance of this inductor?
A friend buys a used pickup truck that comes complete with a CB radio. However, the antenna is broken off, How long should you make the rod
A 5.0 V battery storing 72.0 kJ of energy supplies 1.5 A of current to a circuit. How much energy does the battery have left after powering the circuit for 1.0 h
A 2-kg mass is attached to a spring hanging vertically from the ceiling of an elevator. With the elevator moving up at a constant velocity of 3 m/s, the extension of the spring is 4 cm. What is the spring constant, k, of the spring?
a small glass bead charged to 7.4nc is 4.0cm from a thin uniformly charged 10--cm long glass rod. the bead is repelled
It is desired to construct a solenoid that will have a resistance of5.20(at 20°C) and produce a magnetic field of 4.00multiplied by10-2T at its center when it carries a current of3.40A. determine the length the solenoid should have
When the tips of the rotating propeller of an airplane have a linear speed greater than the speed of sound, the propeller makes a lot of noise, which is undesirable. If the length of the propeller is 2.354 m
location a is 2.70m to the right of a point charge q. location b lies on the same line and is 4.10m to the right of the
imagine a very heavy cube of pure gold that is 1.40 m on a side. approximate the atoms in this cube as little cubes.
A 910 kg sports car collides into the rear end of a 2200 kg SUV stopped at a red light. calculates the speed of the sports car at impact
in a x-ray tube electrons are accelerated through a potential of 10 000v. how much energy does the accelerated
A light spring-gun projectile launcher is mounted on an 0.493 kg air track glider. What is the speed of the air-track glider after the gun is fired
The coordinate system and clusters of points obtained during the experiment to study two-dimensional collisions, find the horizontal speed of the projectile
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