The Sun is a spherically shaped star that is
composed primarily of
a)iron.
b)hydrogen.
c)water.
d)helium.
b
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Force on a Moving Charge: After landing on an unexplored Klingon planet, Spock tests for the direction of the magnetic field by firing a beam of electrons in various directions and by recording the following observations:Electrons moving upward feel a magnetic force in the northwest direction.Electrons moving horizontally toward the north are pushed downward.Electrons moving horizontally toward the southeast are pushed upward.Mr. Spock therefore concludes that the magnetic field at this landing site is in which direction?
A. toward the east B. toward the northeast C. toward the southwest D. toward the southeast E. toward the west
When considering the conduction of electricity, the term cathode refers to
a) a positive wire. b) a neutral aqueous solution. c) a melted ionic compound. d) a negative wire.
The zonal flows giving rise to the belts and zones are similar to the jet streams in our own stratosphere
Indicate whether the statement is true or false
How is the mass hung on the spring related to the force that actually stretches the spring?