Projectile motion is characterized by
A. constant velocity in the x direction and constant acceleration in the y direction
B. constant acceleration in both the x and y directions
C. constant velocity in both the x and y directions
D. constant acceleration in the x direction and constant velocity in the y direction
A. constant velocity in the x direction and constant acceleration in the y direction
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What part of the Sun's aging process will disrupt the biosphere and evaporate the oceans of Earth?
a. the fusion of hydrogen in the core b. an increase in luminosity as the core becomes helium-enriched c. the expansion of the outer layers of the Sun as a red giant d. the supernova explosion caused by the collapse of the iron core e. hydrogen detonation on the white dwarf remnant
Newton's 2nd Law of Motion states that
A) action and reaction are equal and opposite B) force equals mass times acceleration C) an object moves at a constant velocity unless a force acts D) the force of gravity decreases with increasing distance
A massive star may change its color and size notably, but its high luminosity remains fairly constant
Indicate whether the statement is true or false
A series LC circuit contains a 100-mH inductor, a 36.0-mF capacitor and a 12-V battery. The period of the electromagnetic oscillations in the circuit is
a. 0.0227 s. b. 0.377 s. c. 2.26 s. d. 105 s. e. 1750 s.