What makes an electric motor spin? A. The permanent magnet and the electromagnet continuously attract each other.

B. The permanent magnet and the electromagnet continuously repel each other.

C. The permanent magnet and the electromagnet alternately attract and repel each other. O The permanent magnet and the electromagnet alternately attract and repel the power source.

Which of the following is not am example of a polymer? protein nylon kevlar concreta

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of