1st Weeks Lessons

Question 1

What is a closed system

Answer 1

With no mass across boundaries

Question 2

What is an open system

Answer 2

With mass across boundaries

Question 3

Work formula: Letter = formula, unit

Answer 3

W = F*d(x), J(joules)

Question 4

Heat transfer: Letter = formula, units

Answer 4

Q = mcdT, J

Question 5

Rate of heat transfer: Letter = formula

Answer 5

Q’ = dQ/dt

Question 6

Density: Letter = formula, units

Answer 6

P[RHO] = m/v, (kg/m3)

Question 7

Volume flow rate: Letter = formula, units

Answer 7

V’ = dV/dt, (m3/s)

Question 8

Mass flow rate: Letter = formula, units

Answer 8

m’ = dm/dt, (kg/s)

Question 9

Primary function of a system

Answer 9

Turn low quality energy into high quality energy

Question 10

What is specific quantity?

Answer 10

Measurement divided by mass

Question 11

Thermal equilibrium is when..

Answer 11

There is no heat transfer (no temperature difference)

Question 12

Zerath law of Thermodynamics is..

Answer 12

Between three objects there is thermal equilibrium. All are the same temperature

Question 13

Formula for Kelvins to Celcius

Answer 13

K = 273,15 + C

Question 14

Pressure: Letter = formula

Answer 14

p = F/A

Question 15

1 bar = ……. Pa

Answer 15

10^5