A block of wood has a density of 650 kg/m3 . When placed in water, what percent of the volume of the wood is above the surface?
a. 0, the block sinks.
c. 35%
b. 30%
d. 65%
C
Physics & Space Science
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The Saturnian moons of most interest to exobiologists are
A) Rhea and Iapetus. B) Phoebe and Dione. C) Mimas and Tethys. D) Hyperion and Miranda. E) Titan and Enceladus.
Physics & Space Science
Which of the following diagrams best represents the energy diagram of a semiconductor?
A teaspoonful of neutron star material on Earth would weigh
A) about the same as a teaspoonful of Earth-like material. B) a few tons. C) more than Mt. Everest. D) more than the Moon. E) more than Earth.
Physics & Space Science
Which of the following statements is true?
a. A hot object contains a lot of heat. c. Objects do not contain heat. b. A cold object contains only a little heat. d. Statements a and b are true.
Physics & Space Science