Which of the following is an example of poetential energy changing into kinetic energy ?

a. a girl climbing up a hill
b. a fruit falling from a tree
c. a car stopping when the brake is applied
d. a child on a swing slowing down as she swings upwards

Convert .347 kilometers to miles show your work

Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.

What is the equation fort the alkaline zinc/manganese dioxide cell. a) anode b)cathode c)overall equations.