Question

Write a response that would convince a classmate that the sentence is indeed true. If you think that the sentence is not true, write a response that would convince a classmate the sentence is not true.

1. Any time energy transfers into or out of a system, the temperature of the system changes.

2. Pressure at any point in a liquid is dependent on the mass of the liquid above it.

Answer 1

1) False.

First law of thermodynamics

dQ =dU+dW

dU =nCpdT = 0

this is possible in istohermal process.

The total energy is used to work done on the system.

In another way Q =mL (latent heat)

in this situation energy used to change of the state.and it does not change the temperature.

If we give some energy to ice at 0 oc then it is metled to water at 0 oC.

2) False

P =dgh

Pressure is depend on density of liquid and on the depth of container which contains given liquid.