Suppose a system receives a ""deposit"" of 50 J of work from the surroundings and loses a ""withdrawal"" of 84 J of heat to the surroundings. What is the magnitude and the sign of ΔE for this process? Express your answer using two significant figures

Answer : The value of for this process is, -34 J

Explanation :

First law of thermodynamic : It states that the energy can not be created or destroyed, it can only change or transfer from one state to another state.

As per first law of thermodynamic,

where,

= internal energy of the system  = ?

q = heat rejected to the surrounding  = -84 J

w = work done  = +50 J

Now put all the given values in the above expression, we get:

Therefore, the value of for this process is, -34 J

i don,t know so just answer mine