Question

i) Calculate the internal energy change when 15 joule heat is given to the system and 5 joule work is done by the system

Answer 1

Answer:

10

Explanation:

internal energy( U) = heat(q) + work done(W)

U = q + w

U = 15 + (-5)

[ -5 because work done by a system is negative]

so,

U = 10J

Answer 2

Answer:

10

Explanation:

internal energy( U) = heat(q) + work done(W)

U = q + w

U = 15 + (-5)

[ -5 because work done by a system is negative]

so,

U = 10J