As the temperature of a radiation emitting blackbody becomes lower, what happens to the peak wavelength of the radiation?
a. remains constant
b. increases
c. decreases
d. is directly proportional to temperature
B
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The look-back time is numerically equal to the distance to a galaxy in light-years
Indicate whether the statement is true or false
If a 3.0 V potential difference causes a 0.60 A current to flow through a resistor, its resistance is
A) 0.20 ?. B) 1.8 ?. C) 15 ?. D) 18 ?. E) 5.0 ?. F) 3.2 ?.
When a carboxylic acid reacts with an alcohol, the products are water and a(n)
a. aldehyde. b. ester. c. salt. d. amide. e. ketone.
What is the definition of a star's habitable zone?
A) the range of distances from the star where planets with life have been detected B) the range of distances from the star where rocky planets can form C) the range of distances from the star where organic molecules can be stable on the surface of a suitable planet D) the range of distances from the star where liquid water can be stable on the surface of a suitable planet