The relaxation time for tensile stress relaxation is equal to the elastic modulus divided by three times the _________.
Fill in the blank(s) with the appropriate word(s).
viscosity
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In terms of mass, Jupiter is made mostly of
a. rock. b. molten iron. c. water. d. hydrogen and helium. e. carbon dioxide.
A string on a guitar is stretched between two points 30.0 cm apart with a tension of 100 N. The mass/length of the string is 0.00300 kg/m. The frequency of the mode of vibration with the lowest frequency is
A. 304 Hz. B. 350 Hz. C. 376 Hz. D. 415 Hz. E. 433 Hz.
The world's largest refracting telescope is operated at the Yerkes Observatory in Wisconsin. It has an objective of diameter of 1.02 m
Suppose such an instrument could be mounted on a spy satellite at an elevation of 300. km above the surface of the Earth. What is the minimum separation of two objects on the ground if their images are to be clearly resolved by this lens? (Assume an average wavelength of 0.55 ?m for white light.)
The Sun is a
a. moon. b. galaxy. c. planet. d. star.