100% The image shows an experiment in which a student spills water on a wooden block and then places a beaker on it. The beaker
contains two powders: barium hydroxide and ammonium chloride. When the student mixes the powders, a liquid forms and
the beaker emits a gas with a pungent smell. Within a few minutes, the spilled water on the wooden block freezes to ice,
causing the beaker to stick to the block,
Why does the water freeze?
O A. The wooden block absorbs thermal energy from the water.
OB. The surrounding air absorbs thermal energy from the water.
C. The released pungent gas absorbs thermal energy from the water.
D. The reaction inside the beaker absorbs thermal energy from the water.

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

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