In order to take advantage of wave power, water must always come in direct contact with the blade of a turbine to generate electricity.
a. true
b. false

that would be b i just took the test : )

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.

as technology advances, new experiments often expose problems in accepted theories. c

hope i

-lavira: )