This figure is a diagram of a multiflash image of an air puck moving to the right on a horizontal surface. The images sketched are separated by equal time intervals, and the first and last images show the puck at rest. In figure c, which color graph best shows the puck’s velocity as a function of time?
1
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Pluto is a member of the KBOs
a. True b. False Indicate whether the statement is true or false
The maximum mass of a white dwarf is ________
A) limitless; there is no theoretical limit to the maximum mass of a white dwarf B) about the mass of our Sun C) about 1.4 times the mass of our Sun D) about 3 times the mass of our Sun
A fully charged parallel-plate capacitor remains connected to a battery while a dielectric is slid between the plates. Does C increase, decrease, or stay the same?
1.increase 2.decrease 3.remains the same
Of these, which is evidence that Mars once had running water on its surface?
A. There are vast amounts of H2O present in Martian rocks. B. Spacecraft have observed channels and dry riverbeds on the Martian surface. C. There is a medium-sized ocean in the Southern Hemisphere of Mars. D. There is no such evidence.