In a closed insulated container a liquid is stirred with a paddle to increase the temperature which of the following is true ?
$$\Delta $$E = W $$ \ne $$ 0, q = 0
$$\Delta $$E = w = q $$ \ne $$ 0
$$\Delta $$E = 0, W = q $$ \ne $$ 0
W = 0, $$\Delta $$E = q $$ \ne $$ 0.
When in a closed insulated container, a liquid
is stirred, it increases the temperature of liquid thus
it started behaving as adiabatic process resulting
no change in heat and only temperature increases.
Therefore, q = 0 for this process.
Also, $$\Delta $$E = q + W
$$\Delta $$E = W (As, q = 0)
As, there is rise in temperature thus, there must be
change in internal energy, i.e., $$\Delta $$E = W ≠ 0.
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