Series Resonance: A 120-mH inductor is in series with a 20-? resistor and a variable capacitor that can range from 0.110 ?F to 0.400 ?F.(a) What is the range of possible resonance frequencies?(b) If the power supply is a 24-V rms source, what rms current flows at resonance?
What will be an ideal response?
(a) 0.726 kHz to 1.39 kHz (b) 1.20 A
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Briefly explain why radiation was trapped for 380,000 years during the era of nuclei, and why the cosmic background radiation was formed at the end of this era
What will be an ideal response?
The only planet with no atmosphere of consequence is
A) Earth. B) Pluto. C) Venus. D) Mars. E) Mercury.
How many joules of energy are used by a 2.0 hp motor that runs for 1.0 hour? (1 hp = 746 W)
What will be an ideal response?
An object of mass 1.00 kg is attached to a vertical spring with spring constant 100 N/m. The object is held at rest in a position such that the spring is stretched upward a distance 1.00 cm beyond its undisturbed length
If the object is released, how far will it drop before coming to rest? A) 2.06 cm B) 2.00 cm C) 2.94 cm D) 3.06 cm E) 1.94 cm