An ideal heat engine absorbs 100 J of heat from a 400 K reservoir and releases 75 J of heat to a 200 K reservoir. How much work (in J) is done by the engine

Calculate the capacitance of a system that stores 2.0 x 10^-10c of charge at 100.0 v. use c=q/v. a. 2.0 x 10^-12 f b. 2.0 x 10^-8 f c. 5.0 x 10^11 f d. 5.0 x 10^7 f

How is the gravitational force related to the distance between two objects?

Looking at this barometer, is the air pressure high or low? what type of weather would you expect? high, bad low, bad high, good low, good