What is the definition of dynamics in physics

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

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

Aturntable that spins at a constant 74.0 rpm takes 3.10 s to reach this angular speed after it is turned on. find its angular acceleration (in rad/s2), assuming it to be constant, and the number of degrees it turns through while speeding up.