Which changes in energy form are illustrated in the diagram?

a)
electrical > sound > light and mechanical

b)
> > mechanical and sound

c)
> > light and electrical

d)
> > sound and electrical

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

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multiply 2kg by latent heat of vap

-4 on