The sun generates both mechanical and electromagnetic waves. Which statement about those waves is true?
A. The mechanical waves reach Earth, while the electromagnetic do not.
B. The electromagnetic waves reach earth, while the mechanical waves do not.
C. Both the mechanical waves and the electromagnetic waves reach earth.
D. Neither the mechanical waves nor the electromagnetic waves reach earth

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?

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?

The radius of a sphere is increasing at a rate of 9 cm/ sec. find the radius of the sphere when the volume and the radius of the sphere are increasing at the same numerical rate.