A Student plucks a string on a guitar to play a note. How could the student make the sound softer? A. decrease the frequency by making the string longer.

B. decrease the amplitude by plucking with less force.

C. increase the amplitude by plucking with greater force.

D. increase the frequency by making the string shorter.

The density of a liquid could be found by using

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

Why don't you see your reflection in water with waves or repples