A ray of light in air enters a glass surface at right angles to the surface. What is the angle of refraction?
A) 90°
B) 180°
C) 270°
D) 360°
E) 0°
E
You might also like to view...
Fatty acid molecules can align to form a barrier called a bilipid layer, shown below. In this schematic, the ionic end of the fatty acid is shown as a circle and the nonpolar chain is shown as a squiggly line
From the schematic above: why do nonpolar molecules have a difficult time passing through the bilipid layer? A) The nonpolar molecules are too large for the space through which they need to pass. B) The nonpolar molecules are repelled by the polar water molecules. C) The nonpolar molecules have a difficult time getting past the ionic heads of the fatty acid molecules, which are surrounded by water molecules. D) Nonpolar molecules tend to bind with the bilipid layer, thus inhibiting their passage.
Alone among all the large moons, Triton orbits Neptune retrograde, and also at a 20 degree inclination to Neptune's equator
Indicate whether the statement is true or false
A satellite is powered by a small nuclear generator that puts out 10 W. How much matter is converted into energy over the 20-year life span of the generator?
a. 70 µg b. 70 g c. 7 g d. 7 kg e. 4 mg
If you bake cupcakes as directed for a cake, the cupcakes will be
A) over-baked. B) under-baked. C) properly baked.