Answer:
A. size and mass
Explanation:
3.5 kWh
1.2 kWh are lost
65=2.3/Ein*100
0.65=2.3/Ein
Ein=2.3/.65
Ein=3.5
3.5-2.3=1.2 kWh
An atom is the smallest part of an element by itself, while molecules are built of multiple atoms.
p = 36 kgm/s
v = 4m/s
we know that,
p = mv
so,
that is the definition of work