Because of their low surface gravities, the Moon and Mercury lack ________
Fill in the blank(s) with correct word
atmosphere
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The interstate on-ramp is 5.5 km West of your home, and on leaving for grandmother’s house you are only able to accomplish an average velocity of 38 km/hr between your home and the on-ramp. At the on- ramp, you wait for traffic, for 2.0 min – and then are able to proceed toward grandmother’s house. If you wish to arrive there, which is 15 km South of the on-ramp, over a river and through some woods, having achieved an average velocity of 42 km/hr, how fast do you need to drive south on the interstate highway?
A. 58 km/hr B. 48 km/hr C. 78 km/hr D. 39 km/hr
Why do sunspots appear dark?
A) They are composed of different elements than the rest of the sun. B) They are regions that do not emit any radiation. C) They are regions that are significantly cooler than the rest of the photosphere. D) They are regions nearly devoid of gas.
Single-Slit Diffraction: Light of wavelength 687 nm passes through a single slit that is 0.75 mm wide. At what distance from the slit should a screen be placed so that the second dark fringe in the diffraction pattern is to be 1.7 mm from the center of the pattern?
A. 0.39 m B. 0.93 m C. 1.1 m D. 1.5 m E. 1.9 m
You walk 53 m to the north, then you turn 60° to your right and walk another 45m Determine the direction of your displacement vector. Express your answer as an angle relative to east
A) 57° N of E B) 50° N of E C) 69° N of E D) 63° N of E