A 120-V rms voltage at 1000 Hz is applied to an inductor, a 2.00-?F capacitor and a 100-? resistor, all in series. If the rms value of the current in this circuit is 0.680 A, what is the inductance of the inductor?
A) 17.9 mH B) 35.8 mH C) 34.2 mH D) 22.8 mH E) 11.4 mH
B
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The Sun orbits the center of the galaxy about once every ____
a. 200,000 years b. 2,000,000 years c. 20,000,000 years d. 200,000,000 years e. 2,000,000,000 years
Mass on a Spring: A 1.5-kg cart attached to an ideal spring with a force constant (spring constant) of 20 N/m oscillates on a horizontal, frictionless track. At time t = 0.00 s, the cart is released from rest at position x = 10 cm from the equilibrium position.(a) What is the frequency of the oscillations of the cart?(b) Determine the maximum speed of the cart. Where does the maximum speed occur?(c) Find the maximum acceleration of the mass. Where does the maximum acceleration occur?(d) How much total energy does this oscillating system contain?(e) Express the displacement as a function of time using a cosine function.
What will be an ideal response?
The direction of propagation of electromagnetic waves is given by the
A) right hand rule. B) left hand rule. C) right and left hand rules. D) None of the other answers given is correct.
Why is Polaris not always the pole star, and when does it get another chance?
What will be an ideal response?