The volume of a gas is changed along the curved line between a and b in the drawing. do not assume that the curved line is an isotherm or that the gas is ideal.
(a) find the magnitude of the work for the process.
(b) deter- mine whether the work is positive or negative.

The density of a liquid could be found by using

What are two different ways you could find the value of a? explain these methods.

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?