A base is a substance that forms hydroxide ions in a water solution.
O A. True
O B. False

What kind of simple machine is a catapult?

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same

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.)