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A circular coil enclosing an area of 160 cm2 is made of 190 turns of copper wire. The wire making up the coil has resistance of 7.0 ?, and the ends of the wire are connected to form a closed circuit. Initially, a 1.2-T uniform magnetic field points perpendicularly upward through the plane of the coil. The direction of the field then reverses so that the final magnetic field has a magnitude of 1.2 T and points downward through the coil. If the time required for the field to reverse directions is 0.30 s, what is the average current in the coil during that time?
A 120 kg hiker puts on a pair of snowshoes that have an effective combined surface area of 0.80 square meters. How much pressure does he exert on the snow
The membrane that surrounds a certain type of living cell has a surface area of 6.1 x 10-9 m2 and a thickness of 1.3 x 10-8 m. how many such ions are present on the outer surface?
Tthe center C' of the smaller circle is a distance .80R from the center C of the larger circle. illustrate what is the position of the center of mass of the plate?
This demonstration is more complicated because it involves a vector. For a rotating wheel, the direction of the angular momentum, , is found by curving the fingers of your right hand in the direction of the rotation, your thumb then points along .
An uncharged capacitor and a resistor are connected in series to a source of EMF. If ? = 4.38 V, C = 20.1 ?F, and R = 111 ?, Calculate the maximum charge on the capacitor
Determine the tension in each cable if boat has a mass of 490 kg and the angle of each cable is 50 degrees from the horizontal and the boat is being momentarily held at rest. Evaluate this to the tension when the boat is raised and held at rest so th..
Two slits separated by a distance of d = 0.13mm are located at a distance of D = 710mm from a screen. What is the pathlength difference between the two waves from the two slits at the first (m=1) maximum on the screen
Near Earth, the density of protons in the solar wind (a stream of particles from the Sun) is 8.30 cm-3 and their speed is about 460 km/s. Find the current density of these protons
An airplane accelerates down a runway at 3.20 m/s2 for 32.8 s until is finally lifts off the ground. Determine the distance traveled before takeoff.
q1. a 500.0 g pot of water at room temperature 20.0 degrees c is placed on a stove. how much heat is required to change
Light of wavelength 588 nm falls on a double slit. First-order bright bands appear 3.65 cm from the central bright band. The screen is 1.20 m from the slits. How far apart are the slits.
A 110 ball and a 250 ball are related by a 38--long, massless, rigid rod. The balls rotate about their center of mass at 150 what is the speed of the 110 ball.
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