Lực tương tác tĩnh điện giữa 2 điện tích điểm trong chân ko là f nếu một điện tích tăng 4 lần và điện tích kia đồng thời tăng gấp đôi cả hai trong điện môi bằng 2 lực tg tác mới là

How have the competing explanations' experiments on atoms affected the development of the atomic model?

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)