What is the force constant of a spring
which is stretched 4m by a force of 200N

The speed of light can be used to measure the

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=

What is the moment of inertia i of this assembly about the axis through which it is pivoted? express the moment of inertia in terms of mr