A diverging lens is thicker at the center than the edges
Indicate whether the statement is true or false
F
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A 3.0 cm section of a horizontal wire carrying a 6.7 A current from east to west is placed in a north to south 0.42 T magnetic field in the lab. What is the magnitude of the force on the 3.0 cm section of the wire?
A. 0.084 N B. 0.17 N C. 0.25 N D. 0.0017 N E. 0.0025 N
Recent work with type I supernovae at great distances suggests the universe may in fact be accelerating its expansion, a discovery attributed to a newly found:
A) repulsive charge on dark matter. B) polarization and a universal spinning magnetic field. C) dark energy. D) magnetic field associated with antimatter. E) mass determined for the neutrinos.
Should we expect to find abundant amounts of gold and other rare-earth elements elsewhere in the universe?
What will be an ideal response?
How is Einstein's famous equation, E = mc2, important in understanding the Sun?
A) The Sun has a magnetic field strong enough to influence the atmospheres of the planets. B) The Sun's surface temperature is about 6,000° Celsius. C) The Sun is extremely massive. D) The Sun generates energy to shine by losing 4 million tons of mass each second.