Which Gcse physics paper is that question where it was like why is the stopping distance faster for an empty van than one which has lots of packages in it

What does the term discrediting mean?

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

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)