<span>He should study the chapter about laws to get a better understanding about the laws that govern physical objects</span>
Weight equals mass*gravity
W = mg
Given m = 3.1 kg, g = 9.8 m/s^2
W = (3.1)(9.8)
W = 30.38
Answer:0 J
Explanation:
Given
For first step
change in internal Energy of the system is
Work done on the system
For second step
change in internal Energy of the system is
Work done on the system
Work done on the system is considered as Positive and vice-versa.
and from first law of thermodynamics
for first step
overall heat added
For overall Process Heat added is 0 J
Explanation:
that's impossible,the radius of the earth can't decrease when the mass doubles!