The theory of light has been expounded differently by scientists in different periods of time. what is an important reason for these different theories?

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

What happens to an isotope during radioactive decay?

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward