Measuring the Doppler shift of material at various distances from the center of a galaxy can be used to construct a(n) ________________ for that galaxy

Fill in the blank(s) with correct word


rotation curve

Physics & Space Science

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If the polarizing angle for diamond is 67.5°, what is the index of refraction of this material?

a. 2.00 b. 2.20 c. 2.41 d. 2.65

Physics & Space Science

Two identical springs with spring constant 50 N/m support a 5.0-N weight as in the picture below. What is the tension in spring A?

?

?

a.
1.45 N

b.
2.50 N

c.
2.89 N

d.
3.75 N

e.
5.00 N

Physics & Space Science

What is the potential difference VB ? VA when I = 0.50 A in the circuit segment shown below?



a.
+28 V

b.
+2.0 V

c.
?28 V

d.
?2.0 V

e.
+18 V

Physics & Space Science

The bright light at the center of a shadow cast by a penny

1.supports the hypothesis that light can be viewed as rays traveling in straight lines. 2.results from the re-reflection of the diffraction pattern cast by the penny. 3.is the result of the penny's shininess; it acts like a mirror providing a second source to create an interference pattern. 4.is the central maxima of the interference pattern caused by the diffraction effects around the penny.

Physics & Space Science