Asystem does 506 kj of work, and loses 266 kj of heat to the surroundings. what is the change in internal energy of the system?

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

Which two particles are found in the center of an atom

Find the dimensions and area of the largest rectangle that can be inscribed in the upper half of the ellipse. (give your answers in terms of a and b. enter the dimensions as a comma-separated list.)