0.2 kg of air is heated in a constant volume process from 20 to 100(degrees celsius). The specific heat at constant volume is 0.7186J/ Kg K. Calculate the change in entropy of this process.

How is zig zagging a form of acceleration?

Imagine an isolated positive point charge q (many times larger than the charge on a single proton). there is a charged particle a (whose charge is much smaller than charge q) at a distance from the point charge q. on which of the following quantities does the magnitude of the electric field created by charge q at particle a's position depend? check all that apply.the type of the charge on the charged particle athe relative orientation between q and a (while the distance between q and a is fixed)the specific location of the charged particle a (while the distance between q and a is fixed)the amount of the charge on the point charge qthe specific location of the point charge q (while the distance between q and a is fixed)the distance between the point charge q and the charged particle athe amount of the charge on the charged particle a

Which system of units is used by only a small number of countries in the world, including the u.s.