Aswimmer runs horizontally off a diving board with a speed of 3.62 m/s and hits the water at at horizontal distance of 1.68 m from the end of the board; what is the height of the diving board?

Excuse ! extra points plus ! super desperate ! the position of an object does not move relative to a reference point. relative to the reference point the object _. a.) is not moving. b.) is moving.

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?

Which of the following are guidelines to follow for obtaining accurate observations