Sally accelerates a 250 kg cart at 3 m/s/s. What must be the net force?

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.

During the past 150 years in the united states, how did energy consumption compare to population growth