The closest planet to Earth is
a. Mars.
b. Venus.
c. Mercury.
d. Saturn.
b
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A circular loop of one turn and radius 5.0 cm is positioned with its axis parallel to a magnetic field of 0.60 T. By means of high explosives, the area of the loop is suddenly reduced to essentially zero in 0.50 ms. What emf is induced in the loop?
What will be an ideal response?
Earth's magnetic field has reversed itself
Indicate whether the statement is true or false
How much heat energy must be removed from 150 g of oxygen at 22°C to liquefy it at -183°C? (The specific heat of oxygen gas is 0.218 cal/g•°C, and its heat of vaporization is 50.9 cal/g.)
a. 14,300 cal c. 4320 cal b. 9560 cal d. 2160 cal
The ________ phenomenon is an extremely energetic event which apparently occurs in the nuclei of massive galaxies during an early stage of their evolution
Fill in the blank(s) with correct word