(GIVING 16 POINTS) energy is the total potential and kinetic energy of particles in an object. Group of answer choices

Chemical

Nuclear

Thermal

City a and city b had two different temperatures on a particular day. on that day, four times the temperature of city a was 8â° c more than 3 times the temperature of city b. the temperature of city a minus twice the temperature of city b was â’3â° c. what was the temperature of city a and city b on that day? city a was 5â° c, and city b was 4â° c. city a was 3â° c, and city b was â’1â° c. city a was 8â° c, and city b was â’3â° c. city a was 5â° c, and city b was â’5â° c.

Can someone me with questions 15 to 17 plz.

The fact that the total amount of energy in a system remains constant is a(n)