The temperature at the center of the Sun is about 107 degrees. Does it matter whether this is stated as Celsius degrees or kelvins?
A) yes, the kelvin rating will be appreciably higher
B) yes, the kelvin rating will be appreciably lower
C) no, they are practically the same
Answer: C
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What is the spectral type of a main sequence star with a luminosity 100 times greater than the sun?
A) G B) A C) M D) O
A parallel-plate capacitor is charged and then is disconnected from the battery. By what factor does the stored energy change when the plate separation is then doubled?
1.It becomes four times larger. 2.It becomes two times larger. 3.It stays the same. 4.It becomes one-half as large. 5.It becomes one-fourth as large.
The terrestrial planet with the most moons is ____________________
Fill in the blank(s) with correct word
In a section of horizontal pipe with a diameter of 3.00 cm the pressure is 100 kPa and water is flowing with a speed of 1.50 m/s. The pipe narrows to 2.00 cm. What is the pressure in the narrower region?
A) 95.4 kPa B) 47.7 kPa C) 44.4 kPa D) 225 kPa E) 66.7 kPa