The sum of two vectors has the greatest magnitude when the angle between these two vectors is
What will be an ideal response?
Zero degrees
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Spiral galaxies usually contain:
A) M stars. B) white dwarf stars. C) young stars. D) red giant stars.
A 2.0-kg object moving with a velocity of 5.0 m/s in the positive x direction strikes and sticks to a 3.0-kg object moving with a speed of 2.0 m/s in the same direction. How much kinetic energy is lost in this collision?
A. 2.4 J B. 9.6 J C. 5.4 J D. 0.6 J E. 6.0 J
With respect to heavy elements, the stars of the Halo are ________ in metals
Fill in the blank(s) with correct word
A solar or lunar eclipse will occur
a. when the sun is near the line of nodes of the moon and the moon is new or full. b. any time the moon is new or full. c. when the sun is near the solstice and the moon is new or full. d. half way through an eclipse year. e. when the sun is near the equinox and the moon is new or full.