In the atmosphere, the shortest wavelength electromagnetic waves are called
a. microwaves.
b. infrared waves.
c. ultraviolet waves.
d. X-rays.
e. gamma rays.
e
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You are asked to design a metal alloy for a part with a room temperature application. The part is to be made by casting the metal into shape. When casting the part, liquid metal is poured into a mold that has a cavity with the shape of the part. To reduce cost by conserving energy and to utilize an inexpensive furnace that does not have a high temperature capability, it is desired that the metal alloy not have a high melting temperature. What type of metal alloy phase diagrams should you consider first for this part?
(a) Continuous solid solution (b) Eutectic (c) Compound formation (d) Peritectic
A barometer can work because of a bimetallic strip
Indicate whether the statement is true or false
A white dwarf generates energy through fusion
a. True b. False Indicate whether the statement is true or false
Spiral arms are thought to be sites of ________, based on the observations newly formed stars and interstellar dust lanes in and around these features
Fill in the blank(s) with correct word