Which of the following is the correct definition of mechanical energy? a. energy stored in chemical bonds of molecules b. energy of an object due to the random motion of its atoms and molecules c. energy an object has because of its motion or position d. energy produced from the splitting of atoms

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

How do you tell if someone actually cares about you? and just say they do?