Vanessa runs on the soccer field 20 meters North, then makes a cut to the right going East for 3 meters. What is Vanessa’s displacement from her original spot?

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system

2. which of the following does not affect the electrical resistance of a body? a. material composing the body b. bodies directly surrounding the body c. length of the body > d. temperature of the body