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You want to build a giant solenoid of one layer of tightly-wrapped 12-gauge copper wire (diameter is 0.2032 mm). It is to be 3.5 meters tall and square in shape with 0.75-m long sides.
In order to achieve a 150-mT field inside of the solenoid how much current will it need to draw?
Two metal cubes, one copper and one aluminum, with sides of length a are arranged as shown, find the thermal resistance of each cubeb
A car driving directly north on the freeway at a speed of 110 km/h and a truck is leaving the freeway driving 85 km/h in a direction 35 west of north
A 10,000 kg railroad car is rolling at 2 m/s when a 4000 kg load of gravel is suddenly dumped in, What is the railroad car's speed
Oscillation of a 500 Hz tuning fork sets up standing waves in a string clamped at both ends. The wave speed for the string is 430 m/s. What is the length of the string
A perfectly circular hoop of mass m = 6 kg and radius r = 0.4m rotate on a horizontal plane on a vertical axis passing through its center. At t = 0 the hoop rotates at a rate of 400 rpm but 12 s later it stops because of frictional torque. Assumin..
Standing at the edge of a cliff 33.5 m high, you drop a ball. Later, you throw a second ball downward with an initial speed of 12.7 m/s. What is the increase in speed of the second ball
Two small plastic spheres are given positive electrical charges. When they are a distance of 16.0cm apart, the force among them has a magnitude of 0 235N. What is the charge on the second sphere? What is the charge on each sphere if the two charges a..
The work on a system with a mass 100 lbm is known to be 10 BTU's . If there is no change in potential energy and the speed changes from rest to 32 ft/sec. What is the change in the internal energy of the system?
A radio station broadcasts radio waves with a wavelength of 3.25 m in air. The speed of sound in air is 343 m/s and the speed of light in air is 3.00 x 108 m/s. What is the frequency of these waves that I should tune my radio dial to in order to l..
A 2.50 kg textbook is forced against a horizontal spring of negligible mass and force constant 250 N/m, determine how far the book moves from its initial position before coming to a rest
An astronaut measures her mass by means of a device consisting of a chair attached to a large spring. what is the mass of the astronaut and chair
A truck is traveling around a level curve of radius 101.2 m at an instantaneous speed of 20.2 m/s. The truck's speed is increasing at the rate of 1.98 m/s2. Discover the magnitude of the frictional force on a 106.2 kg crate resting on the floor of th..
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