Bones show up in x ray images because they absorb x rays more efficiently than muscle and other tissues do
a. True
b. False
Indicate whether the statement is true or false
True
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Capacitors in Combination: A 4.0-µF capacitor and an 8.0-µF capacitor are connected together. What is the equivalent capacitance of the combination if they are connected (a) in series or (b) in parallel?
What will be an ideal response?
Why do we have seasons on Earth?
a) Season are caused the Sun moving through the constellations of the zodiac b) the spin axis of the Earth titled 23.5 with respect to a line normal to the plane of orbit c) the earth's distance from the Sun varies, so that it is summer the we are closer to the Sun and winter when we are farther from the Sun The spin axis of the Earth is titled 23.5 with respect to a line normal to the plane of orbit
Oil of specific gravity 0.90 is poured on top of a beaker of water. A cube of plastic of specific gravity 0.95 is placed in the liquid. What fraction of the cube will be immersed in water?
What will be an ideal response?
The root mean square speed of a gas molecule is greater than the average speed, because the former gives a greater weight to
a. lighter molecules. b. heavier molecules. c. lower speeds. d. higher speeds. e. more probable speeds.