It takes less and less time to fuse heavier and heavier elements inside a high mass star
Indicate whether the statement is true or false
TRUE
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A hypothesis that has been repeatedly and rigorously tested and supported is known as a:
a. model b. testable prediction c. scientific method d. scientific theory e. result
The speed an object needs to move away from the gravitational pull of Earth is called
A. orbital velocity. B. random velocity. C. rotational velocity. D. escape velocity.
At double the distance from a long current-carrying wire, the strength of the magnetic field produced by that wire decreases to
A) 1/8 of its original value. B) 1/4 of its original value. C) 1/2 of its original value. D) 1/ of its original value. E) /3 of its original value.
Even relatively small astronomical telescopes are ordinarily not used for terrestrial observation because
a. their images are too bright. b. their images are too dim. c. their images are inverted. d. their images are not in color.