Question 12 12.1 Give the principle of the conservation of
charge.
12.2 Two identical objects with charges as indicated
in 12.2.1 and 12.2.2 are brought closer
together so that they touch. Then they are
separated again:
(i) What would the charge on each be after
separation?
(ii) How many electrons were transferred?
(iii) in which direction did the electrons move?
12.2.1
+9
пс
+6
nC
12.2.2
-3
nc
+6
nC
013

How is the gravitational force related to the distance between two objects?

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.

What is the single most important equation in all of physics?