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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Which of the following is the largest object?
a. The Milky Way galaxy. b. The Large Magellanic Cloud. c. The Local Group. d. The Andromeda galaxy.
A piece of aluminum with a mass of 1.0 kg and density of 2700 kg/m3 is suspended from a light cord and then completely immersed in a container of water having density 1000 kg/m3
(a) Determine the volume of the piece of aluminum. (b) Determine the tension in the cord when the aluminum is immersed in the container of water.
How long does it take for a star like our Sun to form?
A) 100 thousand years B) Two million years C) Fifty million years D) One billion years E) 4.6 billion years
When did the extinction of the dinosaurs occur?
A) about 3.5 billion years ago B) about 2 billion years ago C) 540 million years ago D) 65 million years ago E) less than 1 million years ago