Một người chạy đua với vận tốc thay đổi theo thời gian được minh
họa bằng đồ thị trên hình vẽ. Hỏi
người đó chạy được quãng đường
là bao nhiêu trong 16 s.

A-4.60 μc charge is moving at a constant speed of 6.80×105 m/s in the +x−direction relative to a reference frame. at the instant when the point charge is at the origin, what is the magnetic-field vector it produces at the following points.

Aphysical change is a change in the size, shape,, or stafe of matter true or false

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.