What methods do all scientists have in common?

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

In a classical model of the hydrogen atom, the electron moves around the proton in a circular orbit of radius 0.053 nm. what is the electron's orbital frequency? what is the effective current of the electron?