Which of the following statements is true?
a. you are exposed to nuclear radiation every day.
b. most of the nuclear radiation you are exposed to in the environment is man-made.
c. naturally occurring nuclear radiation is called background decay.
d. all natural radiation is at a level low enough to be safe.

How are momentum and impulse related? impulse is a whim to do something, while momentum keeps it going impulse is another name fore instantaneous momentum the impulse acting on and object is equal to the change of momentum it causes. the impulse that acts on and object is the momentum that results.

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?

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?