It is the distribution of ________ atoms in the spiral arms that is measured with 21-cm radio maps
Fill in the blank(s) with correct word
hydrogen
Physics & Space Science
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An electric heater is constructed by applying a potential difference of 110 V across a wire with a resistance of 5.0 ?. What is the power rating of the heater?
a. 2.0 kW b. 2.4 kW c. 1.7 kW d. 1.5 kW e. 60 kW
Physics & Space Science
A primitive unit cell contains ______________lattice point(s).
Fill in the blank(s) with the appropriate word(s).
Physics & Space Science
One light-year (ly) is about _____
A) 23,000 AU B) 34,000 AU C) 56,000 AU D) 63,000 AU
Physics & Space Science
You discover a new star that is 352,800 AU away. What is the distance in light years?
a. 5.6 ly b. 2.3 ly c. 63 ly d. 3.53 ly e. 2.22 x 10^2 ly
Physics & Space Science