The slope of a distance vs. time graph is the acceleration
a. True
b. False
Indicate whether the statement is true or false
False
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Given that all bodies in the solar system should have suffered equally from collisions during the period of early bombardment, if we find a body with relatively few craters on its surface we deduce that
A) the surface of the body is made of material that produces fewer impact craters B) the body must have been located in a region of the solar system that for some reason suffered fewer collisions C) the body must have formed after the period of early bombardment D) geological activity or other processes must have removed older craters resulting in a younger, smoother surface
A "double satellite" is launched into space. It consists of a satellite of mass m and another satellite of mass 5m. The connecting mechanism of these satellites is an explosive bolt and a compressed spring, both of negligible mass. The bolt is exploded and the satellites drift apart having been pushed by the spring. When the less massive satellite has moved a distance of 2.5 m from the center of
mass of the double satellite, how far away from it is the satellite of greater mass? a. 3.0 m c. 0.10 m b. 12 m d. 0.50 m
What problem does adaptive optics correct?
A) Defects in the optics of the telescope, such as the original Hubble mirror B) The opacity of the Earth's atmosphere to some wavelengths of light C) The light pollution of urban areas D) Turbulence in the Earth's atmosphere which creates twinkling E) Chromatic aberration due to use of only a single lens objective
A normal lapse rate of 2.7 °F/1000 ft is equivalent to
a. 3.5 °C/m. b. 1.5 °C/1000 ft. c. 5.0 °C/1000 ft. d. 6.5 °C/1000 ft.