A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.The resistance of the light bulb is __________

Fill in the blank(s) with correct word


20 ohms

Physics & Space Science

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The Sun's surface seethes and churns with a bubbling pattern. Why?

A) We are seeing hot gas rising and cool gas falling as a result of the convection that occurs beneath the surface. B) The Sun's surface is boiling. C) The churning gas is being stirred up by the strong solar wind. D) The churning is an illusion created by varying radiation; the gas on the Sun's surface is actually quite still.

Physics & Space Science

When an atom loses an electron, it becomes

A) sublimated. B) dissociated. C) a plasma. D) an isotope. E) ionized.

Physics & Space Science

Boat 1 goes directly across a stream a distance L and back taking a time t1 . Boat 2 goes down stream a distance L and back taking a time t2 . If both boats had the same speed relative to the water, which of the following statements is true?

a. t2 > t1 b. t2 < t1 c. t2 = t1 d. t2 = 2t1 e. t2 = 0.5t1

Physics & Space Science

What is the relationship between density and distance for the four Galilean moons of Jupiter?

A) density increases with increasing distance B) density remains constant with distance C) density first decreases and then increases with distance D) density decreases with distance

Physics & Space Science