Which of these force fields can both accelerate an electron and change its speed?
A. Electric field.
B. Magnetic field.
C. both of these
D. none of the above
Answer: A
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What are the two sources of energy for the Earth system?
a. the revolution of the Earth along its orbit, which drives external processes, and heat inside the Earth, which drives internal processes b. the sun, which drives external processes, and the Earth's rotation, which drives both external and internal processes c. the revolution of the Earth along its orbit, which drives external processes, and the Earth's rotation, which drives internal processes d. the sun, which drives external processes, and the Earth's rotation, which drives internal processes e. the sun, which drives external processes, and heat inside the Earth, which drives internal processes
Which of the following conditions could best promote drier conditions in the Asian continent?
A) 1040 mb, inward, counterclockwise flow B) 995 mb, outward, clockwise flow C) 995 mb, inward, counterclockwise flow D) 1040 mb, outward clockwise flow
Discuss three (3 ) mechanisms of magma origination
The LifeStraw is a portable ____________________that eliminates many bacteria and viruses that are drawn into it
Fill in the blanks with correct word