If an operatic aria lasts for 5.75 min, its length expressed in seconds is x s, where x is
A) less than 5.75. B) greater than 5.75.
B
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Thin Films: A soap bubble, when illuminated at normal incidence with light of 463 nm, appears to be especially reflective. If the index of refraction of the film is 1.35, what is the minimum thickness the soap film can be if it is surrounded by air?
Fill in the blank(s) with the appropriate word(s).
If nitrogen, Image, were pumped into your lungs at high pressure, what would happen to its solubility in your blood stream?
A) The greater the pressure, the greater the solubility. B) The greater the pressure, the lower the solubility. C) You cannot change solubility of a substance by changing the pressure. D) Nitrogen is not soluble in your blood.
How are jets thought to be produced by active galaxies?
What will be an ideal response?
Astronomers build telescopes on tops of mountains because
a. there is less air to dim the light. b. the seeing is better. c. CCDs work better when there is less oxygen in the air. d. all of the above e. a and b