Contrasting a M3Ib and M3V star, they differ primarily in ________ and ________
Fill in the blank(s) with correct word
size; luminosity
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At which lunar phase(s) are tides most pronounced (for example, the highest high tides)?
A) both new and full moons B) both first and third quarters C) full moon only D) new moon only E) third-quarter moon only
Scientists suspect that Mars once had abundant liquid water on its surface. For this to have been true, early Mars must have had ________ than Mars today.
A) a much higher atmospheric pressure and much stronger greenhouse effect B) a larger mass and radius C) a smaller axis tilt and less elliptical orbit D) larger polar caps and more dust storms
The position x, in meters, of an object is given by the equation x = A + Bt + Ct2, where t represents time in seconds. What are the SI units of A, B, and C?
A) m, m, m B) m, s, s C) m, s, s2 D) m, m/s, m/s2 E) m/s, m/s2, m/s3
A 4.0-mF capacitor initially charged to 50 V and a 6.0-mF capacitor charged to 30 V are connected to each other with the positive plate of each connected to the negative plate of the other. What is the final charge on the 6.0-mF capacitor?
a. 20 mC b. 8.0 mC c. 10 mC d. 12 mC e. 230 mC