You walk 33m to the north, then turn 60° to your right and walk another 45m How far are you from where you originally started?
A) 35 m B) 75 m C) 39 m D) 68 m
D
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When an air mass is pushed upward over an obstacle, it undergoes
A) convectional lifting. B) orographic lifting. C) adiabatic lifting. D) frontal lifting.
If the density of the Universe is less than the critical density, then
A. the Universal expansion will eventually stop sometime in the future. B. the Universe will eventually stop expanding, and then begin to collapse until it ends in a Big Crunch. C. the Universe will not change because its evolution does not depend on the critical density. D. the Universe will expand forever.
Neutron stars are 100,000 times denser than white dwarfs
Indicate whether the statement is true or false
A line of equal longitude is called a
a. meridian. b. zone. c. circle. d. parallel.