Each of two parallel wires separated by 6.0 mm carries a 40-A current. These two currents are in the same direction. Determine the magnitude of the magnetic field at a point that is 5.0 mm from each of the wires
a. 2.6 mT
b. zero
c. 1.9 mT
d. 1.6 mT
e. 3.2 mT
a
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Refer to the figure above. Today's carbon dioxide concentration is about ________ that at any other time in the past 800,000 years.
A) 2 % higher than B) 45% higher than C) double D) 400 times
When you weigh yourself on a bathroom scale on a slight incline instead of a level surface, your weight reading on the scale will be
A) less. B) no different. C) more.
Unlike spirals, elliptical galaxies do not contain a flattened disk
Indicate whether the statement is true or false
Elephants are hunted illegally in Africa for ivory. If the current poaching experience is any guide, the number of elephants will decrease by half in about 25 years
If the elephant population in 1995 was 16,000, by what date would you expect the number to have decreased to 1000? a. 2011 b. 2045 c. 2070 d. 2095 e. 2120