How are sunspots and solar flares similar?
A) Solar flares originate from sunspots.
B) Sunspots originate from solar flares.
C) They happen simultaneously.
A) Solar flares originate from sunspots.
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RC Circuits: An uncharged capacitor is connected in series with a resistor, a dc battery, and an open switch. At time t = 0 s, the switch is closed. Which of the graphs below best describes the charge Q on the capacitor as a function of time t?
A. A B. B C. C D. D E. E
The closest known star to our solar system is Alpha Centauri, which is approximately 4.30 light years away. A spaceship with a constant speed of 0.800c relative to the earth travels from Earth to this star
(a) How much time would elapse during the trip on a clock on board the spaceship? (b) How much time would elapse during the trip on a clock on Earth? What will be an ideal response?
Which of the following represents a case in which you are not accelerating?
A) driving in a straight line at 100 kilometers per hour B) going from 0 to 100 kilometers per hour in 10 seconds C) slamming on the brakes to come to a stop at a stop sign D) driving 100 kilometers per hour around a curve
Salt water is denser than fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt water is
A) less. B) more. C) the same. D) Cannot be determined because we do not know the volume of the ship.