The distance to a hypothetical galaxy is estimated at about 7 × 10^6 light years. A light year is the distance traveled by light in one year; if the speed of light is 3 × 10^8 m/s, about how far is it from our galaxy to this hypothetical galaxy? (1 year = 3.15 × 10^7 s)
a. 7E+21 m
b. 1E+9 m
c. 7E+22 m
d. 7E+5 m
c
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Earth's second largest ocean is the ______________ Ocean
Fill in the blank(s) with correct word
The earth formed 4.57 X 10^9 years ago. What is this time in seconds?
A. 1.67 X10^12 S B. 4.01 X 10^13 S C. 2.40 X 10^ 9 S D. 1.44 X 10^17 S
Much to your chagrin, you find that to be the case: Despite having been rescued during the midterm, you are, once again, lost in a body of water. Fortunately, you still have your astronomical tables and instruments, as well as a UT clock. You thereby
put together the following description of your situation: ? It is the day of the summer solstice. ? The Sun is on your meridian at an altitude 73.5° in the south. ? The UT clock reads 19:00. a. What is your latitude? How do you know? b. What is your longitude? How do you know?
Which of the sailboats shown sails the fastest in its forward direction?
1) 1 2) 2 3) 3 4) 4 It is interesting to note that 5) this is the only boat that sails forward. 6) only two of the boats sail forward. 7) three out of the four boats sail forward. 8) all sail forward, but at different speeds.