The smelting of a metal
(a) Raises the temperature above the melting point.
(b) Separates the metal from the ore.
(c) Deforms the metal into a shape.
(d) Cools the metal very rapidly from a high temperature.
(b) Separates the metal from the ore.
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Intensity: Which one of the following expressions is the correct representation for the speed of light in vacuum?
A.
B.
C.
D. 1 /
E. 1 / ?0?0
Comparing Mercury to the Earth's Moon:
A. Mercury is more than 100 times the mass of Earth's Moon. B. Mercury is only about 1/100th the mass of Earth's Moon C. they both take the same time to complete one orbit around the Sun. D. they both have little atmosphere and a similarly cratered surface. E. Since Mercury has so many active volcanoes, the craters on its surface have almost all been wiped away, while the Moon's craters remain.
When the velocity and acceleration of an object have the same sign, the speed of the object increases
Indicate whether the statement is true or false
The ________ track is the path the star takes on the H-R diagram as it ages
Fill in the blank(s) with correct word