A test car travels in a straight line graph in the figure shows the cars position X as a function of time find its instantaneous velocity at point E

What is the angular momentum of the bar about the axle?

Select the correct answer. what does the process of natural selection involve?

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.