### Ch. 8 #15 Part d

Posted:

**Mon Jan 15, 2018 1:43 pm**In an adiabatic process, no energy is transferred as heat. Indicate whether each of the following statements about an adiabatic process in a closed system is always true, always false, or true in certain conditions (specify the conditions):

(d) delta U=q

Why is this true when w=0? I thought it's always false because there is no energy transferred as heat so q must be 0, so the equation must be either delta U=0 or delta U=w?

(d) delta U=q

Why is this true when w=0? I thought it's always false because there is no energy transferred as heat so q must be 0, so the equation must be either delta U=0 or delta U=w?