Please help i really need it.
this is my physic exam

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false