If you were trying to describe the difference between power and work you could say: select one: a. to find power we need to know force and velocity; to find work we need to know force and distance. b. to find power we need to know energy and distance; to find work we need to know energy and time. c. to find power we need to know distance and time; to find work we need to know velocity and distance. d. to find power we need to know energy and velocity; to find work we need to know distance and force.

What is the length x of the side of the triangle below? (hint: use the cosine function)

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)