Three positive charges q are placed at the vertices of an equilateral triangle. what should be the magnitude and the sign of a charge q, placed at the center of the triangle, so that every charge in the described configuration experiences zero net force?

Why does the input force have to be greater than the force needed to lift the bale?

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?

Newtons view of arrangement of the universe. don't copy from anywhere.