1, What is the meaning of heat in physics? Define with example. 2, What is Temperature? Define with example.
3, How do we measure temperature?
4, What are three scales of temperature?
5, What are the freezing point temperatures in those scales?
6, Explain Three ways to transfer thermal energy with example for each.
7, What is calorie and how do we measure it?

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)

1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.

Heterogeneous mixture with larger particles that never settle is