A block of metal of mass 40kg requires a horizontal force of 100N to drag it with a uniform velocity along a horizontal surface. Calculate the coefficient of friction between the surfaces​

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

dang that balls went far