Coronal holes are holes in the chromosphere to allow the solar wind to stream away from the Sun
a. True
b. False
Indicate whether the statement is true or false
False
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A compound consists of only magnesium, carbon, and oxygen. If the percentage by mass of Mg is 63.9% and that of C is 12.2%, what is the percentage by mass of O?
a. 76.1% b. 23.9% c. 51.7% d. 70.9% e. None of the above
Mutual inductance can depend upon
A) the shape of the coils. B) the number of coils. C) the number of turns. D) the relative position of the coils. E) all of the above as well as other factors.
The light-sensitive cells in our eyes that allow us to see color are called ________.
Fill in the blank(s) with the appropriate word(s).
A long solenoid (1 500 turns/m) carries a current of 20 mA and has an inside diameter of 4.0 cm. A long wire carries a current of 2.0 A along the axis of the solenoid. What is the magnitude of the magnetic field at a point that is inside the solenoid and 1.0 cm from the wire?
a. 78 mT b. 55 mT c. 48 mT d. 68 mT e. 2.0 mT