The blueness of the sky results from

a. preferential scattering of light by gas molecules.
b. the lapse rate.
c. the greenhouse effect.
d. latent heat.


a

Physics & Space Science

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Aerodynamic lift results from ________ Principle.

What will be an ideal response?

Physics & Space Science

A right triangle has sides 10 m, 5 m, and 11 m. The smallest angle of this triangle is nearest

a. 32°. b. 27°. c. 22°. d. 63°. e. Not attainable since this is not a right triangle.

Physics & Space Science

Most of the world's water is in

A) icecaps. B) glaciers. C) rivers and lakes. D) the oceans.

Physics & Space Science

A conducting bar moves as shown near a long wire carrying a constant 50-A current. If a = 4.0 mm, L = 50 cm, and v = 12 m/s, what is the potential difference, VA ? VB?



a.
+15 mV

b.
?15 mV

c.
+20 mV

d.
?20 mV

e.
+10 mV

Physics & Space Science