Answer:
A system of two co-axial cylindersof different diameters which rotate together is called wheel and axle example; the door knob , knob of the tap ,screw driver,water tap
Answer:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion
Explanation:
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Answer:
use the formula negative -eE/A×t
Answer:
Flashlight
Explanation:
Flashlight use batteries and batteries are dc
