An atom gains one extra electron. How does the resulting ion behave when it is near a positively charged transparency? How does the ion behave when it is near a negatively charged tissue?
A) The ion is attracted to the positively charged transparency, but repelled from the negatively charged tissue.
B) The ion is repelled from both the transparency and from the tissue.
C) The ion is repelled from the positively charged transparency, but attracted to the negatively charged tissue.
D) The ion is attracted to both the transparency and to the tissue.
A
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The recently dwarf planet Eris has an orbital period about the Sun, P, of 557 years. According to Kepler's 3rd Law, what is the semi-major axis, a, of its orbit?
A) 55.7 AU B) 38.4 AU C) 72.1 AU D) 67.7 AU
Which of the following is an example of convection?
A) different kinds of material separating by density, like oil and water B) rocks sinking in water C) warm air expanding and rising while cooler air contracts and falls D) gas bubbling upward through a liquid
As an object moves faster through the air, its terminal speed increases
Indicate whether the statement is true or false
If the current in the 4.0-? resistor is 1.4 A, what is the magnitude of the potential difference, VA ? VB?
a.
69 V
b.
55 V
c.
62 V
d.
48 V
e.
31 V