Dawn images of Vesta show that it is much wider than it is tall. What might be the reason for its irregular shape?
What will be an ideal response?
It is probably the result of an impact. There is a huge impact crater site at Vesta's south pole, with a central peak that is one of the largest mountains in the solar system. Had it not been for this giant impact, Vesta would have much more mass, and would have enough gravity to be spherical in shape.
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Once a terrestrial planet had formed from a large number of planetesimals, heat could have melted it and allowed it to differentiate into a metallic core of ____________density and a rocky mantle or crust of ____________ density
a. higher; lower b. lower; higher c. Wrong! The interior stays solid. d. Wrong! There is no separation according to density.
Reactance: What capacitance will have the same reactance as a 100-mH inductance of both of them are in a 120-V 60-Hz circuit?
Fill in the blank(s) with the appropriate word(s).
The chromosphere is red because it is hot enough to ________ hydrogen atoms
Fill in the blank(s) with correct word
A 120-V rms voltage at 60 Hz is applied across an inductor and a 200-? resistor. If the impedance of this circuit is 216 ?, what is the rms value of the current?
A) 0.336 A B) 0.446 A C) 0.556 A D) 0.667 A E) 0.767 A