Abilliard ball rolling across a table to the right at 1.8 m/s makes a head-on elastic collision with an identical ball. the mass of a billiard ball is 38 q if the second ball initially at rest, what is the velocity of the first ball after the collision? tries 0/20 submit answer initially at rest, what is the velocity of the second ball after the collision? if the second ball submit answer tries 0/20 if the second ball is initially moving to the left with a velocity of -0.9 m/s, what is the velocity of the first ball after the collision? tries 0/20 submit answer if the second ball is initially moving to the left with a velocity of -0.9 m/s, what is the velocity of the second ball after the collision?

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