Which of these BEST shows a change from potential to kinetic energy? A: A sandwich at lunch helps a student run a race

B: Electricity making a bulb light up

C: Transfer of heat through electromagnetic waves

D: A ball sitting at the top of a hill

Please help :(

Dona wrote the characteristics of two types of galaxies as shown below: type a: has a large flattened core type b: does not have a regular shape which statement is correct? type a is an irregular galaxy and type b is a lens galaxy. type a is a lens galaxy and type b is an irregular galaxy. type a is a spiral galaxy and type b is an elliptical galaxy. type a is an elliptical galaxy and type b is a spiral galaxy.