As a spaceship's velocity gets closer to the speed of light
A) its length will increase and its clock will run more slowly.
B) its length will decrease and its clock will run faster.
C) its length will increase and its clock will run faster.
D) its length will decrease and its clock will run more slowly.
E) None of these will happen.
D
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An athlete participates in an interplanetary discus throw competition during an Olympiad that takes place on a planet where the acceleration due to gravity is 9.7 m/s2
He throws the discus with an initial velocity of 20 m/s at an angle of 60° from the vertical. Neglecting air resistance and the height of the discus at the point of release, what is the range of the discus? A) 36 m B) 40 m C) 60 m D) 21 m E) 32 m
Two equal and opposite forces of 6.0 N act on an object. The unbalanced force on the object
a. is 6.0 N. b. is 0 N. c. is 8 N. d. is 12 N. e. cannot be determined from given information.
Electrical resistivity and electrical _________are both material properties independent of the specimen geometry, and they are inversely related to each other.
Fill in the blank(s) with the appropriate word(s).
A faint white dwarf that temporarily increases in brightness as a consequence of nuclear explosions on its surface is termed
a. a nova. b. a Type II supernova. c. a bright nebula. d. a red giant.