Select the best answer from the choices below. Standing waves are formed by: a
A wave hitting the surface of an object and bouncing back
b
Light moving from one medium to another
c
Two or more identical waves moving in opposite directions
d
Waves moving around an obstacle

Use the table to answer question 22 23 and 24.

Calculate the work done by an external agent during an isothermal compression of 1.00 mol of oxygen from a volume of 22.4 l at 10∘c and 1.0 atm pressure to 16.8l

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.