Suppose there were no solar wind. How would the appearance of a comet in our inner solar system be different?
A) It would have only one tail instead of two.
B) It would not have a coma.
C) It would not have a nucleus.
D) It would be much brighter in appearance.
A) It would have only one tail instead of two.
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A solid nonconducting sphere (radius = 12 cm) has a charge of uniform density (30 nC/m3) distributed throughout its volume. Determine the magnitude of the electric field 15 cm from the center of the sphere
a. 22 N/C b. 49 N/C c. 31 N/C d. 87 N/C e. 26 N/C
The variations in the angle at which the Sun's rays strike Earth's surface give us the seasons. Name four physical factors that contribute to the Earth's seasons. (Hint: Think of the big picture.)
What will be an ideal response?
Process of Science: Devise an experiment that would produce evidence (not necessarily proof) that Earth is round. You may use any technology you like, but you may not leave Earth (i.e., no satellite photos and no space travel)
Be as creative as you like there are many right answers.
Two hypothetical discoveries in Part A deal with moons that, like Earth's moon, are relatively large compared to their planets. Which of the following best explains why finding 1 planet with such a moon is consistent with the nebular theory, while finding 6 planets with such moons is not consistent?
a. Unusually large moons form in giant impacts, which are relatively rare events. b. The nebular theory says that only planets at least as large as Earth can have large Moons, and 6 Earth-size planets would not be likely to form in one solar system. c. The nebular theory holds that moons of any size should be rare, so finding 1 is not too surprising but finding 6 would be very surprising.