Glassy, pearly, silky and greasy are terms that refer to a mineral's ________.
Streak
Luster
Hardness
Luster
Physics & Space Science
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The fundamental force that is the principal cause of what we experience as frictional forces is:
A. gravitational force B. electromagnetic force C. weak force D. strong force
Physics & Space Science
In hot-work, a metal is deformed at temperatures that are either above the ___________temperature, or above 50 % of the absolute melting temperature.
Fill in the blank(s) with the appropriate word(s).
Physics & Space Science
Describe some of the difficulties people have in making good longterm predictions
What will be an ideal response?
Physics & Space Science
The wavelength of ________ is longer than the wavelength of yellow light.
A. blue-green B. yellow C. green D. red
Physics & Space Science