Question 18(Multiple Choice Worth 2 points) Which statement best describes an isolated system?
O Energy flow into and out of the system but matter is contained.
O Energy is contained within the system and matter is exchanged.
ONeither energy nor matter are exchanged with the surroundings.
There is no energy or matter that exists inside an isolated system.

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

What is meant by the statement" the melting poin of glycerine is 13 degree celsius

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages