Lực tương tác giữa hai điện tích điểm q1 và q2 đặt cách nhau một đoạn r trong môi trường có hằng số điện môi  có độ lớn là

Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons

Which one of the following research methods can show cause and effect

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?