Compare the differential rotation rates of the four jovian planets
What will be an ideal response?
Jupiter and Saturn rotate rapidly, in about ten hours, with their equators spinning fastest. Both Uranus and Neptune spin slower (but still faster than Earth), and their equators spin slower than their higher latitudes.
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Do physicists consider electromagnetic fields to be "real"?
A) No, because they are only an idea, imagined only by the human mind. B) Yes, because electromagnetic fields contain energy, even though they are not made atoms. C) Yes, because electromagnetic fields exert forces, even though they are not made of as atoms. D) No, because electromagnetic fields are not made of any material substance such as atoms. E) Yes, because electromagnetic fields are made of atoms.
If R = 3.0 k?, C = 5.0 mF, ? = 6.0 V, Q = 15 mC, and I = 4.0 mA, what is the potential difference Vb ? Va?
a.
?3.0 V
b.
+9.0 V
c.
?15 V
d.
+21 V
e.
?6.0 V
Stream velocity is dependent on
A) the size and shape of the stream's channel. B) the gradient and stream dimension. C) gradient and friction. D) gradient, channel geometry, and discharge.
If the elliptical orbit of Mercury were more eccentric, its precession rate would be
A) larger than it is now. B) smaller than it is now. C) the same as it is now. D) nonexistent.