By now, you know that sound is produced by vibrations. these vibrations can travel through solids, liquids, and gases, but not through
a) empty space
b) granite rock
c) living objects
d) the center of the earth

Which two objects have the greatest gravitational force acting between them

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

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?