1) The car burns 6.9 kg of petrol on a 110 km road. The average engine power was 13 kW and the average speed of the car was 75 km / h. Calculate the NK of the car. 2) After driving 100 km, the car burns 8 l of petrol. How much heat is released when this gasoline burns? Gasoline density 710 kg / m3.

3) 960 t of coal is burned per day in the boiler furnace of a 100 MW steam turbine boiler. Calculate the efficiency of this turbine.

Will give brainliest! which statement best describes the difference between strong nuclear forces and weak nuclear forces? weak nuclear forces are involved when certain types of atoms break down. strong nuclear forces are responsible for holding atoms' nucleus together. weak nuclear forces hold bonds between atoms together. strong nuclear forces hold together the nucleus of an atom. strong nuclear bonds prevent atoms from falling apart. weak nuclear bonds prevent compounds from falling apart. strong nuclear forces are involved in breaking electrons from their shells. weak nuclear forces hold protons in the nucleus.