Determine the mechanical energy of this object: a 1-kg ball sits on a 10-meter high cliff.

a. 98 J

b. 10 J

c. 980 J

d. The ball isn't moving, so the mechanical energy is zero.

A metal melts at 450 degrees celsius. Is this property of the metal classified as chemical or physical?

Which of the following will change the momentum of a moving object? Select all that apply. a change in mass a change in volume a change in velocity a change in acceleration

Out of Br2 and NaBr which compound is more likely to be more soluble in CCl4

Which one is a weak interaction (Physical Bond, intermolecular interaction) ?

Which elements are necessary to accomplish work? a) force, energy, displacement b) energy, cause, displacement c) force, cause, energy d) force, cause, displacement

How does heat transfer takes place between any two systems?

Hydrate name of CaCl2 * 8 H2O

Calculate the heat evolved from a mixture of 14.1 l of sulfure dioxide

Which stament best describes a solution

Which answer accurately describes the difference between speed and velocity? Read each answer choice carefully. Question 4 options: A. If speed is constant, then velocity is also constant. B. Speed requires direction.