Brittany is changing the tire of her car on a steep hill 25.0 m high. She trips and drops the 12.0-kg spare tire, which rolls down the hill with an initial speed of 2.50 m/ s. What is the speed of the tire at the top of the next hill, which is 6.00 m high? (Ignore the effects of rotation KE and friction.) * a. 1.97 m/s
b. 19.7 m/s
c. 25.0 m/s
d. 250. m/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 an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

The electric field direction is defined by the direction of the force felt by (select one of the following answers): 1. a negative charge. 2. a positive charge. 3. both positive and negative charges.