As we look at larger and larger scales in the universe, we find:
A) smaller and smaller masses.
B) almost exclusively visible matter.
C) a larger and larger percentage of the matter is visible.
D) a larger and larger percentage of the matter is dark.
E) an equal amount of visible and dark matter.
D
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Who started launching liquid-filled rockets in the United States in 1926?
A) Robert Goddard B) Konstantin Tsiolkovsky C) Hermann Oberth D) Wernher von Braun
A champion athlete can produce one horsepower (746 W) for a short period of time. The number of 16 cm high steps a 70 kg athlete could ascend in one minute while expending one horsepower is
a. 4. b. 7. c. 65. d. 408. e. 4 567.
Which planet has the largest satellite in the Solar System?
A. Saturn B. Mercury C. Mars D. Uranus E. Jupiter
Two kg of water are heated from 15ºC to 300ºC at 101 kPa. Determine the amount of heat added during the process. Assume cP is 4.18 kJ/kg·K for liquid water and 1.86 kJ/kg·K for steam. Assume the heat of vaporization is 2258 kJ/kg at 101 kPa.
What will be an ideal response?