A wheel, starting from rest, rotates with a constant angular acceleration of 1.20 rad/s2. During a certain 2.00 s interval, it turns through 4.60 rad. (a) How long had the wheel been turning before the start of the 2.00 s interval? (b) What was the angular velocity of the wheel at the start of the 2.00 s interval?

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?

How do we measure or think of speed in the united states?

The solid that is formed and usually sinks to the bottom of a solution is the