The critical angle for a beam of light passing from water into air is 48.8°. This means that all light rays with an angle of incidence greater than this angle will be
A) absorbed.
B) totally reflected.
C) partially reflected and partially transmitted.
D) totally transmitted.
E) totally polarized.
B
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The convection zone constantly cycles fresh hydrogen into the Sun's core and moves created helium into the outer parts of the star.
Answer the following statement true (T) or false (F)
Today, Mars has virtually no magnetic field
Indicate whether the statement is true or false
A hydrogen atom in the ground state absorbs a 13.32-eV photon. To what level is the electron promoted? (The ionization energy of hydrogen is 13.6 eV)
a. n = 6 b. n = 10 c. n = 7 d. n = 5 e. n = 11
Bats can detect small objects such as insects that are of a size on the order of a wavelength. If bats emit a chirp at a frequency of 60 kHz and the speed of soundwaves in air is 330 m/s, what is the smallest size insect they can detect?
a. 1.5 mm b. 3.5 mm c. 5.5 mm d. 7.5 mm e. 9.8 mm