Two bags, A and B were found in the labarotory. Bag A contained 20kilograms of cotton while Bag B contained 5 kilograms of sand. Which of the two bags has a higher density? pls guys explain

Which of the following is an example of motion in two dimensions?

Often called simply "velocity," this is the velocity of an object at a particular moment in time.

The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.