This x-ray image shows a loop of hot gas above the surface of the Sun. If we took a visible light photo that looked in the Sun's photosphere just under the two points where the loop of gas comes down (arrows), what would we find?
A) sunspots
B) bright prominences
C) coronal holes
D) radiation zones
A) sunspots
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A galvanometer has a coil with a resistance of 24.0 ?, and a current of 180 ?A causes it to deflect full scale. If this galvanometer is to be used to construct an ammeter that can read up to 10.0 A, what shunt resistor is required?
A) 123 µ? B) 234 µ? C) 342 µ? D) 432 µ? E) 423 µ?
A rocket develops 10,000 N of thrust at liftoff. If the speed of the ejected fuel is 2000 m/s, at what rate (in kg/s) must the fuel be ejected?
What will be an ideal response?
The proper abbreviation for ‘seconds' is __________
Fill in the blank(s) with correct word
Increasing the temperature of 1 gram of ice-cold water to the temperature of boiling water requires
A) 80 calories. B) 100 calories. C) 540 calories. D) none of the above