When you look into a pool of water, the depth looks less than it actually is because the light is dispersed
a. True
b. False
Indicate whether the statement is true or false
False
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What makes a particle strange?
a. It can spontaneously change its charge. b. Its mass is too small to compare to other particles. c. Its mass is too large to compare to other particles. d. It decays at an inexplicably fast speed. e. It lasts much longer than expected.
How many seconds are in one year? (Calculate this, do not look it up.)
A) about 86 thousand (86,000, or 8.6 × 105 ) B) about 380 million (380,000,000, or 3.8 × 108 ) C) about 30 million (30,000,000, or 3 × 107 ) D) about 3,600 (3.6 × 103 )
The _____ is radiation from the hot matter of the Universe soon after the big bang
A) gamma radiation B) cosmic microwave background C) neutron radiation D) cosmic ultraviolet background
Using quantum theories to study the hydrogen atom allows the prediction and experimental verification of many data about atoms such as He+ and Li2+. Some quantities that can successfully be predicted about He+ and Li2+ in this manner are:
a. the color of the light they will emit. b. their mass. c. their abundance in nature. d. All of the above.