You stand near the earth's equator. A positively charged particle that starts moving parallel to the surface of the earth in a straight line directed east is initially deflected upwards. If you know there are no electric fields in the vicinity, a possible reason why the particle does not initially acquire a downward component of velocity is because near the equator the magnetic field lines of the
earth are directed
a. upward.
b. downward.
c. from south to north.
d. from north to south.
e. from east to west.
c
Physics & Space Science
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The two most abundant elements in the Sun are:
A) magnesium and carbon. B) hydrogen and helium. C) nitrogen and neon. D) iron and oxygen.
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Which is Saturn's largest satellite?
a. Ganymede b. Enceladus c. Phoebe d. Titan e. Callisto
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What will be an ideal response?
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Some minerals glow when illuminated with ultraviolet light because
A) ultraviolet photons boost atomic electrons in the mineral to higher energy states. B) ultraviolet photons have high energy. C) of selective reflection. D) of selective transmission. E) none of the above
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