Describe with the aid of a sketch how a heat pump system can be used to heat your home.
I’m so tired of these homework pages someone help me I don’t understand
The calorific value of gaseous fuels is expressed in terms o (a) keal (b) kcal/kg (c) keal/m (d) kcal/n (e) all of the above.
Which best describes the reliability of the source?
what is the value of -2/5 ÷ 3/4​