Motion in a circle at constant speed is motion with constant velocity
Indicate whether the statement is true or false
F
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An LR circuit contains an ideal 60-V battery, a 51-H inductor having no resistance, a 21-? resistor, and a switch S, all in series
Initially, the switch is open and has been open for a very long time. At time t = 0 s, the switch is suddenly closed. When the voltage across the resistor is equal to the voltage across the inductor, what is the current in the circuit? A) 1.4 A B) 0.57 A C) 1.1 A D) 0.86 A E) 1.7 A
The design of modern X-ray telescopes depends on:
A) lenses made of germanium. B) the prime focus design, with mirrors made of iron. C) grazing incidence optics. D) achromatic lenses to keep the X-rays in focus. E) the Cassegrain design, with mirrors made of lead.
Of the jovian planets, which generates the least internal heat?
A) Pluto B) Jupiter C) Neptune D) Saturn E) Uranus
Suppose XL > XC. If switch A is left open and switch B is closed in the figure below, what happens to the phase angle?