The number of significant figures in 0.040 is
A) one.
B) two.
C) three.
D) four.
B
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Which of the following composite materials could be recycled by melting the shredded composite and form recycled pellets with uniform properties?
(a) Epoxy matrix and carbon fibers (b) PP matrix and glass fibers (c) PP matrix and PP fibers (d) PP matrix and PE fibers
We have direct evidence from ALMA that supports nebular theory
Indicate whether the statement is true or false
Star A has twice the absolute temperature of star B, but they both have the same radius. What is the ratio of star A’s power output to star B’s output due to electromagnetic radiation? The emissivity of both stars can be assumed to be 1
1.4 2.8 3.16 4.64
Which is the law of reflection?
a. The angle of incidence is the complement of the angle of refraction. b. The angle of incidence is one-half the angle of refraction. c. The angle of transmission is equal to the angle of incidence. d. The angle of incidence equals the angle of reflection. e. The angle of incidence is twice the angle of reflection.