Câu 34. Ba điện tích điểm q1=–10–6 C, q2=5.10–7 C, q3=4.10–7 C lần lượt đặt tại A, B, C trong không khí, AB=5 cm. AC=4 cm. BC=1 cm. Tính lực tác dụng lên q1
A. 4,05. 10–2 N B. 16,2. 10–2 N C. 20,25. 10–2 N. D. 3,05.10-2N

According to newton’s law of universal gravitation, which statements are true? as we move to higher altitudes, the force of gravity on us decreases. as we move to higher altitudes, the force of gravity on us increases. as we gain mass, the force of gravity on us decreases. as we gain mass, the force of gravity on us increases. as we move faster, the force of gravity on us increases.

Four identical lab carts each have a mass of 200 kg. different masses are added to the carts and the velocities are measured. all carts move to the right.

What describes the particles in a liquid