The estimated number of stars in the Milky Way is about how many billion?
a. 1 to 2
b. 100 to 200
c. 10 to 20
d. 1000 to 2000
b
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The constellations in which the Sun appears over the course of each year are called
a. circumpolar stars b. circumsolar stars c. the constellations of the zodiac d. the tropical constellations e. solstice stars
A rope with a total mass of 25.0 kg is tied to a tree on one side of a 125-m wide ravine. You are pulling on the other end of the rope with a force of 415 N
If you pluck the rope at your end, how long will it take the pulse to travel across the ravine to the tree?
The loss of usable energy in cables used to conduct electricity from power plants to cities is cause by ________________
Fill in the blank(s) with correct word
About 500 stars can be seen by the naked eye from somewhere on Earth
Indicate whether the statement is true or false