Rocks that formed from the cooling of molten material are classified as
a. discordant.
b. metamorphic.
c. sedimentary.
d. igneous.
d
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Basic Postulates: One of Einstein's postulates in formulating the special theory of relativity was that the laws of physics are the same in reference frames that
A. accelerate. B. move at constant velocity with respect to an inertial frame. C. oscillate. D. are stationary, but not in moving frames.
Order the following objects in increasing size (radius):
A) neutron star, white dwarf, Jupiter, Sun B) neutron star, Jupiter, white dwarf, Sun C) Jupiter, white dwarf, neutron star, Sun D) Jupiter, white dwarf, Sun, neutron star
A vector quantity has only a magnitude and no direction associated with it
a. True b. False Indicate whether the statement is true or false
A certain material is in a room at 27°C. If the absolute temperature (K) of the material is tripled, its resistance quadruples. (Water freezes at 273 K.) What is the value for a, the temperature coefficient of resistivity?
a. 0.0050 (°C)-1 c. 1 (°C)-1 b. 0.0025 (°C)-1 d. 3 (°C)-1