The time tM to the maximum height of an object of mass m launched from the the ground with initial velocity, V . The force of air resistance must be taken into account and it is proportional to the velocity of the object with proportionality constant k. (a) Find the dimensions of k.

Which statements best describe energy? check all that apply. the total amount of energy in the universe remains constant. the total amount of energy in the universe changes constantly. energy cannot be converted from one form to another. energy can be converted from one form to another. energy cannot be created or destroyed. energy can be created or destroyed.

What is reflection, what is refraction, and what is diffraction. what some similarities or differences between the three.

Wich factors affect the electrical force between two objects?