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A coil has an inductance of 0.45 H and a resistance of 42 ohms. The coil is connected to a 5.6 V ideal battery. When the current reaches half of its maximum value, find the following.
a. At what rate is its magnetic energy being stored in the conductor?
b. At what rate is the energy being dissipated?
c. What is the total power that the battery supplies?
Heat engines take input energy in the form of heat, use some of that energy to do work, and exhaust the remainder. Determine the magnitude of the heat the athlete gives off
The classroom temperature is 20 C. The relative humidity is 60%. What is the total humidity (kg of H2O vapor) in the room if its volume is 200 m3.
the time constant of an RL circuit with L=25mH is six times larger than the time constant of an RC circuit with C=55uF. Both circuits have the same resistance R. What is the time constant of the RC circuit?
A green LED has a forward voltage drop of 2.3 V. Estimate the bandgap energy for the semiconductor that makes the green LED
A parallel plate capacitor is constructed with Teflon (dielectric constant 2.1) between the plates. What charge was originally stored
A planet of mass 6.00 1025 kg is in a circular orbit of radius 2.00 1011 m around a star. The star exerts a force on the planet of constant magnitude 5.03 1023 N. The speed of the planet is 4.09 104 m/s. All through this half "year", how much work is..
The time constant of an RL circuit with L = 25 mH is five times the time constant of an RC circuit with C = 40 µF. What is the time constant of the RL circuit
A sailor drops a wrench from the top of a sailboat's vertical mast while the boat is moving rapidly and steadily straight forward. Where will the wrench hit the deck
A rock is thrown vertically up at 6.7 m/s. (a) What is it's height when its velocity is 1.35 m/s? (b) Has the rock made it to the highest point in the path?
A boy flies a kite with the string at a 30 degree angle to the horizontal. The tension in the string is 4.5N. How much work does the string do on the boy
You are kicking a ball in the air that is sitting on the ground. You are told the initial velocity and the distance to a wall of a known height. how fast the ball is going when it reaches the walls position
A cubical block of wood 10cm on a side, floats at the interface between oil and water with its lower surface 1.50 cm below the surface
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