Physics, 22.07.2021 14:00 ykluhredd

một trường học sử dụng hệ thống camera giám sát được cấp điện bằng điện lưới quốc gia để hệ thống đó có thể hoạt động liên tục cả trong điều kiện mất điện lưới thì cần ???

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Physics, 22.06.2019 18:00, RyannLambertt7141

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.

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Physics, 22.06.2019 21:20, payshencec21

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một trường học sử dụng hệ thống camera giám sát được cấp điện bằng điện lưới quốc gia để hệ thống đó...