My teacher wants us to make something about energy. for instance define kinetic energy. then we need to build something that represents it. in a past time i did volume and used a graduated cyclometer that i filled up with water and froze. this unit is energy, so anything that has to do with energy. give me a few ideas on what i can do as well as where i can find the supplies! before the weekend (first weekend in march) urgent! best idea will get brainest and a !

A3.9 g aluminum foil ball with a charge of +4.1×10−9 c is suspended on a string in a uniform horizontal e⃗ field. the string deviates to the right and makes an angle of 30∘ with the vertical. part a part complete what information about the e⃗ field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of e⃗ only the direction of e⃗ both the magnitude and the direction of e⃗ none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you

What are the dimensions of the cross section that passes through the points a, f, g, and d?

Which of the following is a measure of the amount of light a star directly emits?               a.  luminosity    b.  intensity    c.  wavelength    d.  brightness