The number of protons in the nucleus determines which element it is
a. True
b. False
Indicate whether the statement is true or false
True
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The ratio of the hydrostatic stress to the elastic volumetric strain is equal to the _____________modulus.
Fill in the blank(s) with the appropriate word(s).
A mole of oxygen (O2) molecules and a mole of carbon dioxide (CO2) molecules at the same temperature and pressure have
A) the same average molecular speeds. B) the same number of atoms. C) different average kinetic energy per molecule. D) the same number of molecules. E) different volumes.
An optical fiber is made of clear plastic with index of refraction n = 1.57 . For what angles with the surface will light remain within the plastic "guide"?
a. ? < 32.5° b. ? < 57.3° c. ? < 39.6° d. ? < 50.4° e. ? < 68.7°
Hector drives a pickup truck horizontally at 15.0 m/s. He is transporting a crate of delicate lead crystal. If the coefficient of static friction between the crate and the truck bed is 0.300, what is the minimum stopping distance for the truck so the crate will not slide?
a. 28.7 m c. 38.3 m b. 51.0 m d. 44.4 m