Why did the filter paper have to be rinsed thoroughly before being allowed to dry? how would it have affected your results if you hadn’t rinsed the filter paper?.

Why don't you see your reflection in water with waves or repples

An electron moves with a constant horizontal velocity of 3.0 × 106 m/s and no initial vertical velocity as it enters a deflector inside a tv tube. the electron strikes the screen after traveling 26 cm horizontally and 19 cm vertically upward with no horizontal acceleration. what is the constant vertical acceleration provided by the deflector? (the effects of gravity can be ignored.)

What are the dimensions of the cross section that passes through the points a, f, g, and d?