Alice is going on a picnic and is aware that it will be easier to carry the picnic basket if it balances at the center where the handle is attached. She has placed a 2.35-kg container of potato salad at one end and a 0.600-kg package of hot dogs at the other end of a 52.0-cm long basket. Determine where she should place a 2.15-kg container of lemonade so that the basket balances at its center.

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

because growing process had stoped after 4-5 year

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me