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A wire of resistance 8 ohms and length 2.2 m is bent into a circle and is concentric by a solenoid in which the magnetic flux changes from 4 T *m^2 to 2 T*m^2 in 0.3 seconds.
1. What is the emf in the wire?
2. What is the current in the wire?
3. What is the non-Coulomb electric field in the wire?
a fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. the
Calculate how much power is needed to push a 91 kilogram chest at 0.67 m/s along a horizontal floor where the coefficient of friction is 0.78
circuit consists of a battery connected to three resistors (70 Ohms, 30 ohms, and 160 ohms) in parallel. The total current through the resistors is 1.9A. What is current through each resistor
A lab technician uses laser light with a wavelength of 640 nm to test a diffraction grating. How many lines per millimeter does this grating have
Two masses are connected by a string which goes over an ideal pulley. Block A has a mass of 4.75kg and can slide along the smooth plane inclined by 37.0 degrees above the horizontal. The masses remain stationary. a) draw a free body diagram b) what m..
A capillary tube with a closed end is place into water.
The focal length of a simple magnifier is 7.00 cm. Assume the magnifier to be a thin lens placedvery close to the eye. How far in front of the magnifier should an object be placedif the image is formed at the observer's near point, 25.0 cm infront of..
A transformer is to be utilized to provide power for a computer disk drive that needs 6.0V (rms) instead of the 120 V (rms) from the wall outlet. The number of turns in the primary is 400. Discover the number of turns in the secondary?
a child of mass 32 kg sits on a wooden horse on a carousel. the wooden horse is 3.7 m from the center of the carousel
A transformer has 3,840 turns in the secondary. The inputvoltage is 110V, the output current is 6.5A. the input current is0.5A. Calculate the output voltage
Aircraft A weighs 1000kg, traveling at 25m/s crashes into Aircraft B weighing 1500kg that is parked. After the collision, both aircraft skidded for 9.7s at a speed of 10m/s. How far did the aircraft slide?
A solid spherical ball of mass 1.44 kg and radius 0.11 m rolls along a smooth, level surface with a speed of 2 m/s. How far up the plane does the ball go
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