The spiral arms are blue from the presence of Population ________ stars in them
Fill in the blank(s) with correct word
I
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The diagram shows a plot of the temperature of the sun as a function of distance above the bottom of the photosphere. What is the temperature of the sun at a distance of 2,000 km?
a. 500 K
b. 900 K
c. 5,000 K
d. 9,000 K
e. 100,000 K
Resistors in Combination: Four unequal resistors are connected in series with each other. Which one of the following statements is correct about this combination?
A. The equivalent resistance is equal to that of any one of the resistors. B. The equivalent resistance is equal to average of the four resistances. C. The equivalent resistance is less than that of the smallest resistor. D. The equivalent resistance is less than that of the largest resistor. E. The equivalent resistance is more than the largest resistance.
A hoop is rolling without slipping along a horizontal surface with a speed of 5.50 m/s when it starts up a ramp that makes an angle of 25.0° with the horizontal. What is the speed of the hoop after it has rolled 3.00 m up the ramp?
A) 4.22 m/s B) 1.91 m/s C) 2.06 m/s D) 3.79 m/s E) 8.02 m/s
Light is reflecting off a wedge-shaped thin piece of glass producing bright and dark interference fringes. If a certain location has a bright fringe, a nearby point will have a bright fringe if the thickness of the glass increases by:
a. one wavelength of the light. c. 1/8 of a wavelength of the light. b. 1/4 of a wavelength of the light. d. 1/2 of a wavelength of the light.