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

Physics & Space Science

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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.

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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.

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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

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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

Physics & Space Science