Galaxies contain 10 times as much dark matter as visible matter
a. True
b. False
Indicate whether the statement is true or false
True
Physics & Space Science
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In photoelectric emission, the work function is the minimum
A) frequency of light to produce emission. B) energy required to eject an electron from the surface. C) energy an emitted electron possesses. D) none of the above
Physics & Space Science
Room temperature is about 20 degrees on the:
A. Kelvin scale B. Celsius scale C. Fahrenheit scale D. absolute scale E. C major scale
Physics & Space Science
What is the composition of Jupiter?
a. mostly carbon dioxide and methane b. mostly methane c. mostly helium and carbon dioxide d. mostly nitrogen e. mostly hydrogen and helium
Physics & Space Science
Which of the following is not a conserved quantity?
A) energy B) momentum C) angular momentum D) radiation
Physics & Space Science