The temperature at the ________ of the Sun's chromosphere is higher than the temperature ________.
A. top; of the Sun's corona
B. base; at the top of the chromosphere
C. base; of the Sun's corona
D. top; at the base of the chromosphere
Answer: D
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51 Pegasi is important because
a. it is a pulsar with planets orbiting around it. b. it is a star with a planet that is known to support intelligent life. c. it is the largest satellite of Jupiter. d. it is the largest known asteroid. e. it is the first star like our sun that was found to have a planet orbiting it.
Two slides have the same height at the top, but one is short and steep while the other is a long gentle slope. If they can be considered frictionless, which will produce the largest speed at the bottom?
A. They produce the same speed at the bottom B. Depends on the mass of the person on the slide C. The steep slide D. The gradual slide
You push on a block on frictionless ice with a force of 8 N, causing it to accelerate at 2 m/s2 . The mass of the block is
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Determine the total resistance of a 10-ohm resistor and a 30-ohm resistor connected in parallel.