A second magnitude star in Ursa Major is brighter than a fourth magnitude star in Orion
a. True
b. False
Indicate whether the statement is true or false
True
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This diagram represents an edge-on view of our Milky Way Galaxy. Of the four labeled points, which one is located in what we call the halo of the galaxy?
A) point 1 B) point 2 C) point 3 D) point 4
A wire carries a steady current of 0.1 A over a period of 200 s. What total charge passes through the wire in this time interval?
a. 2 C c. 0.005 C b. 200 C d. 20 C
If there is no external applied force, the sum of the internal stresses in a composite is equal to _________.
Fill in the blank(s) with the appropriate word(s).
Which of these is NOT typical of a condensing protostar?
A) magnetic fields producing polar flows B) dusty disks around their equators C) Herbig-Haro objects projecting a light year out in space D) fusion of helium into carbon in their cores E) more infrared than visible light given off from the cocoon of dust around the star