The largest fraction of nearby stars (e.g. within 100 light years) are:
A. neutron stars
B. Sun-like stars
C. blue Main Sequence stars
D. blue supergiants
E. red dwarfs
Answer: E. red dwarfs
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Most meteor showers occur ________, as we again intersect the comet's orbit
Fill in the blank(s) with correct word
Why are the designs of the Hubble and Chandra Space Telescopes different?
What will be an ideal response?
The difference between a DC and an AC generator is that
a. the DC generator has one unbroken slip ring. b. the AC generator has one unbroken slip ring. c. the DC generator has one slip ring split in two halves. d. the AC generator has one slip ring split in two halves. e. the DC generator has two unbroken slip rings.
Which of the following is an example of a nonconservative force?
a. gravity c. friction b. the force from a Hooke's law spring d. Both choices A and B are valid.