The luminosity (L) of a star is the total energy the star radiates in _______________
Fill in the blank(s) with correct word
One second, 1 sec, 1 second, one sec
You might also like to view...
The ecliptic is often called the _______________ of Earth's orbit on the sky
Fill in the blank(s) with correct word
If the same-sized force is made to act over a smaller area, the pressure is
a. decreased. b. increased. c. unchanged. d. dependent upon the shape of the area.
A Young's double-slit apparatus is set up so that a screen is positioned 2.1 m from the double slits, and the spacing between the two slits is 0.033 mm. What is the distance between alternating bright fringes on the screen if the light source has a wavelength of 678 nm? (1 nm = 10?9 m)
a. 3.0E–4 m b. 4.3E–2 m c. 2.1E–2 m d. 4.7E–2 m e. 1.1E–2 m
The electromagnetic radiation that causes tanning:
a. can produce cancer. b. rarely passes through glass windows. c. is absorbed by ozone. d. is all of the above.