3 boxes are connected by strings and are being pulled along by a rope. The boxes have masses of 1kg, 2kg and 3kg. Consider Friction to be negligible. If the boxes are pulled along at an acceleration of 4m/s^2, What is the tension in the rope pulling them?

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)

Which statement best explains why the overall charge on an atom is zero?

Amaterial that provides resistance to the flow of electric current is called a(an) (1 points)