A plasma state of matter is
a. a conducting solid.
b. a part of the blood.
c. an ionized gas.
d. a conducting liquid.
e. none of the above.
c
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How many seconds are in one year? (Calculate this, do not look it up.)
A) about 380 million (380,000,000, or 3.8 × 108) B) about 30 million (30,000,000, or 3 × 107) C) about 86 thousand (86,000, or 8.6 × 105) D) about 3600 (3.6 × 103)
If the distance from Earth to the Moon were doubled, the gravitational force between them would increase by a factor of 22, or 4
Indicate whether the statement is true or false
Who proposed the geocentric view that was accepted and used for more than 18 centuries?
a. Copernicus b. Ptolemy c. Aristotle d. Kepler
If the electric field and magnetic field of an electromagnetic wave are given by E = E0 sin(kx - ?t) and B = B0 sin(kx - ?t), and if the value of E0 is 51 µV/m, what is the value of B0? (c = 3.0 x 108 m/s)
A) 1.7 × 1014 T B) 1.7 × 103 T C) 1.7 × 10-14 T D) 1.7 × 104 T E) 1.7 × 10-13 T