The thermal motions of the atoms in a gas cloud can make it collapse to form a protostar
a. True
b. False
Indicate whether the statement is true or false
False
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The time constant in an RC circuit is the time that is required for the charge on the capacitor in a circuit with an initially uncharged capacitor to reach what percentage of its final value?
A. 50% B. 37% C. 100% D. 63% E. 90%
Answer each of the following questions for our local sky. A. Where is the north celestial pole in our sky? B. Is Polaris a circumpolar star in our sky? Explain. C. Describe the meridian in our sky. D. Describe the celestial equator in our sky
What will be an ideal response?
State how to draw the three rays for finding the image position due to a thin lens
What will be an ideal response?
Which of the following best describes the greatest known value for index of refraction?
A. 1.732 B. 1.999.... (just shy of 2) C. 2.000... (2 exactly) D. a value greater than 2 but not greater than 3 E. a value greater than 3