The image formed by a convex spherical mirror will always be
a. upright and smaller than the object.
b. upright and larger than the object.
c. inverted and larger than the object.
d. inverted and smaller than the obj

May someone explain how to do this question?

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

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)