A box with a mass of 2 kg is pushed by a 10 N force. The
acceleration is_m/s2

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?

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.