Blackbody radiation is caused by an object's ____

a. chemical structure
b. binding energy
c. excitation level
d. absolute zero
e. thermal agitation


e

Physics & Space Science

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Addition by Components: Two perpendicular vectors,  and  , are added together giving vector  . If the magnitudes of both vectors  and  are doubled without changing their directions, the magnitude of vector 

src="https://sciemce.com/media/4/ppg__cp1pbb0313192044__f15g1q7g6.jpg" style="vertical-align: -5.0px;" /> will

A. increase by a factor of 8.
B. increase by a factor of 4.
C. increase by a factor of 2.
D. increase by a factor of  .
E. not change.

Physics & Space Science

Hubble's law can be applied to measure the distance of the constellation of Orion.

Answer the following statement true (T) or false (F)

Physics & Space Science

Describe the operation of an automobile internal combustion engine in terms of the Otto cycle

What will be an ideal response?

Physics & Space Science

A string is stretched and fixed at both ends, 200 cm apart. If the density of the string is 0.015 g/cm, and its tension is 600 N, what is the wavelength (in cm) of the first harmonic?

a. 600 b. 400 c. 800 d. 1000 e. 200

Physics & Space Science