____ has (have) wavelengths that are shorter than visible light. I. Gamma rays II. Ultraviolet light III. Infrared radiation IV. X-rays
a. I & II
b. I & IV
c. II & III
d. II, III, & IV
e. I, II, & IV
e
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Total Internal Reflection: A scuba diver is 1.2 m beneath the surface of a still pond of water. At what angle relative to the normal at the surface must the diver shine a beam of light toward the surface in order for a person on a distant bank to be able to see it? The index of refraction for water is 1.33.
A. 41° B. 48° C. 59° D. 90° E. 0°
Is pressure a (A) vector or (B) scalar quantity?
(A) Vector quantity (B) Scalar quantity
Einstein's equation E = mc2 describes the conversion of mass to energy that occurs during nuclear fusion. If a billion joules of energy are released by this process, how much mass has been consumed? (Recall, a joule is a Nt-m or kg-m2/s2 and the speed of light is ~300 million m/s.)
Describe one of the future planned space missions to search for extrasolar planets. How will it improve on current observations?
What will be an ideal response?