A charged particle moves with a constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves
A) upward at an angle of 45° above the horizontal.
B) straight upward.
C) straight downward.
D) horizontally.
D
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The Large and Small Magellanic clouds are satellites galaxies of the Milky Way
Indicate whether the statement is true or false
Why would the English system of units be more useful if a foot contained 10 inches?
What will be an ideal response?
The star Aldebaran is seen today just on the western horizon at 9:38 P.M. Tomorrow night at 9:38 P.M., Aldebaran will be ________.
A. below the horizon B. on the eastern horizon C. on the horizon D. above the horizon E. None of these choices is correct.
Sea levels have risen recently, and will probably rise further in the future, due to
A) ozone depletion caused by increased CFCs and other ozone-destroying chemicals. B) global warming caused by increased CFCs and other ozone-destroying chemicals. C) ozone depletion caused by increased CO2 and other greenhouse gases. D) acid rain caused by compounds of sulfur and nitrogen in coal. E) global warming caused by increased CO2 and other greenhouse gases.