The clouds of Mars consist mainly of frozen carbon dioxide and frozen water.
Answer the following statement true (T) or false (F)
True
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Mass on a Spring: A 1.53-kg piece of iron is hung by a vertical ideal spring. When perturbed slightly, the system is moves up and down in simple harmonic oscillations with a frequency of 1.95 Hz and an amplitude of 7.50 cm. If we choose the total potential energy (elastic and gravitational) to be zero at the equilibrium position of the hanging iron, what is the total mechanical energy of the system?
A. 0.844 J B. 0.646 J C. 0.633 J D. 0.955 J E. 0.000 J
(Choose all that apply.) Observatories on mountaintops can detect
A) visible light. B) x-rays. C) a small portion of the infrared spectrum. D) very-long-wavelength infrared light. E) radio waves.
Most of the carbon dioxide on the Earth
A) is dissolved in the oceans, forming carbonate rocks B) has frozen out in the polar regions C) has escaped into space D) is still present in the atmosphere
Two children start at one end of a street, the origin, run to the other end, then head back. On the way back Joan is ahead of Mike. Which statement is correct about the distances run and the displacements from the origin?
A. Joan has run a greater distance and her displacement is greater than Mike's. B. Mike has run a greater distance and his displacement is greater than Joan's. C. Joan has run a greater distance, but her displacement is less than Mike's. D. Mike has run a greater distance, but his displacement is less than Joan's. E. Mike has run a shorter distance, and his displacement is less than Joan's.