12. A ship travels 50 km due [N] and then turns and travels 30 km due [S] in 4.0 hours. What is its
average velocity?
a. 5.0 km/h [N]
b. 5.0 km/h [S]
c. 20 km/h [N]
d. 20 km/h [S]

When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called

If element x has 99 protons how many electrons does it have

How to know which equation of motion to use where?explain