Question

Calculate the change in the internal energy of a system when (a) the system
absorbs 2000J of heat and produces 500 J of work (b) the system absorbs
1100J of heat and 400J of work is done on it

Answer 1

Dear Student,

◆ Answer -

(a) ∆U = 1500 J

(b) ∆U = 1500 J

● Explaination -

(a) When the system absorbs 2000J of heat and produces 500 J of work -

Here, q = 2000 J and W = 500 J.

Now, change in internal energy is -

∆U = q - W

∆U = 2000 - 500

∆U = 1500 J

(b) When the system absorbs 1100J of heat and 400J of work is done on it -

Here, q = 1100 J and W = -400 J.

Now, change in internal energy is -

∆U = q - W

∆U = 1100 - (-400)

∆U = 1100 + 400

∆U = 1500 J

Thanks dear. Hope this helps you...

Answer 2

Explanation:

hope u a help answer .......