The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. if all of the energy obtained from burning 1.21 lb of ethane (fuel value is 11.36 kcal/g) is used to heat 128.0 kg of water at an initial temperature of 19.2 ∘c, what is the final temperature?

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.

a cold ice-tea.

pour in room temperature or cold water. cover the pitcher and refrigerate. steep white or green tea for 6 to 8 hours; steep black or oolong tea for 8 to 12 hours.jun 28, 2015