A Snickers bar is burned in a bomb calorimeter containing 3500 grams of water causing a 72°C temperature change. How many joules are there in a bar?

Ineed to find the answer of this question because i dont understand it

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

Apush or pull that moves or changes and object when to objects touch