Addition by 1. Components: The figure shows three vectors, 
, 
, and 
, having magnitudes 7.0 cm, 6.0 cm, and 4.0 cm, respectively. Find the x and y components of the resultant of these three vectors.
What will be an ideal response?
-11 cm (x component), -4.5 cm (y component)
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A white dwarf is supported against its own gravity by the inability of its _______________ electrons to pack into a smaller volume
Fill in the blank(s) with correct word
As more lamps are put into a series circuit, the overall current in the power source
A) increases. B) decreases. C) stays the same.
Elastic Collisions: In the figure showing an isolated system, determine the character of the collision. The masses of the blocks, and the velocities before and after, are shown. The collision is
A. perfectly elastic. B. partially inelastic. C. completely inelastic. D. characterized by an increase in kinetic energy. E. not possible because momentum is not conserved.
Compared to Ida, Eros, and Gaspra, what was odd about Mathilde?
A) It had a small moon, so we could more accurately find its mass. B) It was much denser, probably made of iron and nickel, a class M asteroid. C) It was less dense than water, indicating it was a comet nucleus, rather than an asteroid. D) It was less dense than rock, but more than ice, suggesting a porous structure. E) It was the same density as the Earth's Moon, indicating it had been knocked off our Moon.