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The rms voltage across a 0.020 μF capacitor is 2.0 V at a frequency of 56 Hz. A) What is the rms current through the capacitor? Answer in μA.
You are designing a small coil (called a search coil) to measure magnetic fields. It is to have a diameter of 3.60 cm and is to be designed so that flipping it 180 degrees in a field of 9.00×1
An inductor has inductance of 0.260 H and carries a current that is decreasing at a uniform rate of19.0 mA/ s. Find the self-induced emf in this inductor.
How long after the switch is closed will it take for the energy stored in the inductor to reach half of its maximum value?
What emf is induced in this loop? If the loop has a resistance of 0.650 ohm, find the current induced in the loop.
A 0.35 kg particle moves in an xy plane according to x(t) = - 12 + 4 t - 6 t3 and y(t) = 20 + 9 t - 11 t2, with x and y in meters and t in seconds. At t = 0.9 s, what are (a) the magnitude and (b) t
A car of mass M brakes for 40m along a level road before stopping. The coefficient friction between the tires and the road is 0.7. What was the car's initial speed when it started to brake? i) Draw
How can these diferent forces result from single electric field that exists at point P?
When an electric cell is connected to a circuit, electrons flow away from the negative terminal in the circuit. But within the cell, electrons flow to the negative terminal. Explain.
A 400 uH inductor is connected across an AC generator that produces a peak voltage of 5.2 V. a). At what frequency f is the peak current 46 mA?
A capacitor is connected to a 12 kHz oscillator. The peak current is 70 mA that produces an rms voltage of 5.0 V. a). What is the value of the capacitance C?
A light bulb is wired in series with a 139 resistor, and they are connected across a 120 V source. The power delivered to the light bulb is 23.7 W. What are the two possible resistances of the light
The filament in an incandescent light bulb is made from tungsten. The light bulb is plugged into a 240 V outlet and draws a current of 1.04 A. If the radius of the tungsten wire is 0.003 mm, how lon
The earth's magnetic field, with a magnetic dipole moment of 8.5×1022 A*m^2, is generated by currents within the molten iron of the earth's outer core. (The inner core is solid iron.)
However, the superconductivity is destroyed if the magnetic field at the surface of the metal reaches or exceeds 0.10 {\rm T}.What is the maximum current in a straight, 2.4-mm-diameter superconducti
A powertel station delivers 54000kw of power at 1200v to a factory through wires with a total resistance 3.5. How much less power is wasted? How much power is delivered at 50000v rather than 12000v.
In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 5.30 x 107 J at lift-off. What is the work done on the jet by the catapult?
Calculate the electrostatic potential V at all points in space outside of the surface of the conductors.
(1) A proton moves in the positive x direction through a uniform magnetic field in the positive y direction. What is the direction of the magnetic force on the proton? Explain your answer.
How far from the edge of the counter does the cat land? What is the cat's velocity (magnitude and direction) when it lands on the counter?
What is the lowest frequency to which a resonance tube and (1) meter long will repond under the conditions of your experiment which is velocity of sound?
Dip theloop into the sollution to form a soap film in the loop. Reflect light from a desk lamp into the the soap film. Describe the the color patterns you see.
Determine how close the permanent magnet mujst be to a steel paper clip ( or other small metal object) to make it move. Notice how close it must be to pick the object up. Record results. Repeat with
a) What is acceleration of each sprinter? b) What are their respective maximum speeds? c)Which sprinter is ahead at the 6.00 s mark,and by how much? d) What is the maximum distance by which Healan i
(a) Determine the radius of the electron's orbit? (b) Determine the electric force between the particles. (c) Determine the gravitational force between the particles. (d) Which force holds the elect