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A flat circular coil with 106 turns, a radius of 2.43 x10-2 m, and a resistance of 0.328 Ω is exposed to an external magnetic field that is directed perpendicular to the plane of the coil. The magnitude of the external magnetic field is changing at a rate of ΔB/Δt = 0.772T/s, thus inducing a current in the coil. Find the magnitude of the magnetic field at the center of the coil that is produced with the induced current.
the column of mercury in a barometer has a height of 0.760 m when the pressure is one atmosphere and the temperature is
Three equal point charges, each with charge 1.25 , are placed at the vertices of an equilateral triangle whose sides are of length 0.400. What is the electric potential energy of the system
An electric motor is used to lift an elevator and its load to aheight of 20m. at which rate is the energy supplied to the motor
A 0.60 kg body oscillates on a spring that, when extended 1.0 mm from equilibrium, has a restoring force of 7.0 N. find the angular frequency of oscillation
Clifford is in a real hurry, however, and skips the speedramp. Starting from rest with an acceleration of 0.39 m/s2, he covers the same distance as the ramp does, but in one-fourth the time. Illustrate what is the speed at which the belt of the ra..
A balloon rises at at constant velocity of 3m/s. A rock is released over the side. 4.5 seconds later this rock hits the ground. compute the height of the rock when it is halfway between the balloon and the ground. Assume Earth gravity (-9.81m/s), ..
A capacitor is a device used in a variety of electronic circuits. In a simple design a capacitor consists of two parallel metal plates of area A separated by a distance d. When the plates are connected to the positive and negative terminals of a b..
An electric heater is used to heat a room of volume 66 m3. Air is brought into the room at 5°C and is completely replaced twice per hour. what minimum wattage must the heater have
a styrofoam ball of mass 0.120 g is placed in an electric field of 6000 nc pointing downward. what charge must be
a woman and her dog are out for a morning run to the river which is located 3.51 km away. the woman runs at 3.75 ms in
A .1 kg meterstick is supported at its .4m mark by a stringattached to the ceiling. A .7 kg mass hangs vertically from the.05m mark. A mass is attached somewhere on the meterstick to keepit in both horizontal and rotational and translational equil..
A star with the same mass and diameter as the sun rotates around a central axis with a period of 28.8 days. What would be the new rotation period of the star
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