Aconcave mirror brings the sun's rays to a focus in front of the mirror. suppose the mirror is submerged in a swimming pool but still pointed up at the sun. part a will the sun's rays be focused nearer to, farther from, or at the same distance from the mirror? explain.

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies. molten iron has a density of 7.0g/cm cubed. in its solid state, iron has a density of 8.0g/cm cubed.

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton