Motion in a circle at constant speed is motion with constant velocity

Indicate whether the statement is true or false


F

Physics & Space Science

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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

Physics & Space Science

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.

Physics & Space Science

Of the jovian planets, which generates the least internal heat?

A) Pluto B) Jupiter C) Neptune D) Saturn E) Uranus

Physics & Space Science

Suppose XL > XC. If switch A is left open and switch B is closed in the figure below, what happens to the phase angle?

Physics & Space Science