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An infinitely long solenoid has n turns per length, a radius R, and carries a current I = Io( e^-?t )cos?t where ?, Io, and ? are constants. a. What is the magnitude of the induced electric field (as a function of t) at a distance R/2 from the central axis of the solenoid? b. What is the magnitude of the induced electric field (as a function of t) at a distance R/2 from the central axis of the solenoid? c. A ring of resistance ? and radius 2R surround the solenoid so that their central axes coincide. What is the magnitude of the current induce in the ring
A rock is tossed straight up with a velocity of 16m/s When it returns, it falls into a hole 10m deep. What is the rock's velocity as it hits the bottom of the hole
A 50-kg parachutist falls from a height of 2000 m to the ground. Her final speed is 4 m/s. what is the total work done on her
A certain waffle iron is rated at 0.66 kW when connected to a 120-V source. What current does the waffle iron carry
describe the enery transformations that take place as you swing on a swing.why do you have to keep pumping to keep swinging as high? what happens if you stop pumping
A gymnast with mass m1 = 42 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 106 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
A 67? resistor, an 9.0?F capacitor, and a 36mH inductor are connected in series in an ac circuit. Calculate the impedance for a source frequency of 300 Hz
A sound source emits sounds of frequency 215 Hz that travel through still air at 340 m/s. Find the frequency heard by the listener
A ladder 8.00 m long leans against the side of a building, what is the horizontal distance from the bottom of the ladder to the building
A coaxial cable has a capacitance of 3.0 pF. The inner conductor has a radius of 1.0 mm, Find the length of the cable
A living specimen in equilibrium with the atmosphere contains one atom of 14C (half-life = 5 730 yr) for every 7.70 1011 stable carbon atoms. Find the number of carbon atoms in the sample
A projectile is launched on an unnamed planet. The projectiles vertical position is y(t)= -5t^2 + 15t +50, find the vertical velocity of the projectile launched
A circular coil consists of 60 turns of wire wound around the rim of a plywood disk of radius .15 m. what is the magetic field produced at the center of this disk
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