An emission nebula appears primarily ________ in color, due to ionized hydrogen
Fill in the blank(s) with correct word
red
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A piston compresses a gas, while at the same time heat is lost to the surroundings. The temperature of the gas rises. This is governed by the __________ law of thermodynamics
Fill in the blank(s) with correct word
The reason the jovian planets lost very little of their original atmosphere is due to their
A) ring systems. B) strong magnetic fields. C) many moons. D) large mass. E) rapid rotation.
The main difference between an incandescent bulb and a fluorescent bulb is that the incandescent bulb
A) uses electromagnetic radiation to heat a wire, while a fluorescent bulb uses magnetic fields to heat a gas. B) sends an electric current through a gas while the fluorescent bulb heats a thin wire electrically. C) uses electric current to heat a wire, while a fluorescent bulb sends an electric current through a gas. D) heats a wire by sending an electric current through it, while the fluorescent heats a solid powdery material by sending a current through it. E) heats a wire by sending an electric current through it, while a fluorescent bulb uses magnetic fields to heat a gas.
A mover slides a refrigerator 5 meters across a floor. If a force of 200 N was used, how much work was done?