what is the minimum power required for a loudspeaker to produce 103DB sound at a distance of 10.1 M in any direction.

(a) How much energy does a microwave transfer to a bowl of soup if the  microwave has an efficiency of 84% and it consumes 1.8 MJ of electrical  energy (b) Draw an energy flow diagram for the microwave.

The inductance of a tuning circuit of an AM radio is 4 mH. Find the capacitance of the circuit required for reception at 1200 kHz.

The LC circuit of a radar transmitter oscillates at 40.0 GHz. (a) What inductance is required for the circuit to resonate at this frequency if its capacitance is 1.70 pF? 253.3 pH (b) What is the inductive reactance of the circuit at this frequency?

An LC circuit with a 5.01 pF capacitor oscillates in such a manner as to radiate at a wavelength of 3.26 m. a) What is the resonant frequency? Hz b) What inductance is in series with the capacitor? µH

In an oscillating LC circuit, L = 30.0 mH and C = 7.20 μF. At time t = 0 the current is 9.10 mA, the charge on the capacitor is 3.20 μC, and the capacitor is charging. (a) What is the total energy in the circuit? J (b) What is the maximum charge on the capacitor? с (c) What is the maximum current? A (d) If the charge on the capacitor is given by q = Q cos(wt + ), what is the phase angle ø? (e) Suppose the data are the same, except that the capacitor is discharging at t = 0. What then is op?

In order to get the reactance to 120 at 1.0 MHz, you add a capacitor in series to your 3.0 nF capacitor. What value does this capacitor need to be? 3.0 nF ?

A SMALL BULB RADIATES EM ENERGY IN ALL DIRECTIONS. AT A DISTANCE OF 3.0M FROM THE SOURCE, THE RMS MAGNETIC FIELD 15 4.7 x 107 T. FIND THE AVERAGE POWER OF THIS SOURCE.

A sinusoidal voltage  Δv = (80.0 V) sin (150t) is applied to aseries RLC circuit with L = 80.0 mH, C = 125.0 µF, and R =40.0 Ω. (a) What is the impedance of the circuit? (b) What isthe maximum current in the circuit?

A capacitor with capacitance of 6.5 x 10-5 F is charged by connecting it to a 12.0-V battery. The capacitor is disconnected from the battery and connected across an inductor with L = 1.50 H. What are the frequency and the period of these oscillations (the time for one oscillation)?