It is likely that the density of the universe is made up mostly of
A. hydrogen
B. electromagnetic radiation
C. dark energy
D. cold dark matter
Answer: C. dark energy
Physics & Space Science
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The surface tension of water is 0.0730 N/m. What is the height of the water in a capillary tube of diameter 2.00 mm?
A. 1.27 cm B. 1.37 cm C. 1.49 cm D. 1.58 cm E. 1.63 cm
Physics & Space Science
Two electromagnetic have different frequencies but equal amplitudes. The one with higher frequency has the
A) greater energy. B) greater speed. C) longer wavelength. D) All of the above. E) None of the above.
Physics & Space Science
Discuss advantages and disadvantages of using a large control volume.
What will be an ideal response?
Physics & Space Science
Can either normal or dark matter stop the universal expansion?
What will be an ideal response?
Physics & Space Science