What is the best definition of friendship? a.) a long-term connection with another person b.) a special relationship between people who enjoy being together c.) a special relationship between people who are the same age d.) a special relationship between people in the same school or club

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?

Arowboat passenger uses an oar to push the boat off the dock by exerting a force of 40n for 3.0s. what impulse acts on the boat.

Why do astronauts in the space shuttle weigh less?