What is one way that electromagnetic waves differ from mechanical waves?
Question 11 opt...
Physics, 22.05.2020 21:02 derisepicowe0fa
What is one way that electromagnetic waves differ from mechanical waves?
Question 11 options:
Electromagnetic waves move slower.
Electromagnetic waves are longitudinal.
Electromagnetic waves can travel through empty space.
There is no difference between them.
Answers: 2
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Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.
Answers: 1
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