It was the distribution of ________ that showed Harlow Shapley we were no where near the center of the Milky Way in the 1920s
A) planetary nebulae
B) emission nebulae
C) open clusters
D) globular clusters
E) supernova remnants
D
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If you change the magnetic field inside a closed loop of wire, you induce in the loop
A. all of these B. a current C. a voltage D. an electric field
The temperature of a sample of a substance is a way to gauge
A. the kinetic energy of the fastest moving molecule in the sample. B. the average momentum of the fastest 50% of the molecules in the sample. C. the average kinetic energy of the molecules in that sample. D. the average momentum of the molecules in a sample.
A 500-W device is connected to a 120-V ac power source. What rms current flows through this device?
A) 4.2 A B) 5.9 A C) 120 A D) 150 A E) 170 A
The temperature scale where the numerical value is proportional to the average kinetic energy of the atoms or molecules is __________
Fill in the blank(s) with correct word