If m is 5.00 kg and r is 20.0 cm, calculate the magnitude and direction of the net gravitational force acting on the ball with the mass of 4m in case 2. define the positive direction as pointing to the right, so your answer should have a positive sign if the net force is directed right, and a negative sign if the net force is directed left. note that a number such as 1.23 x 10^-9 can be entered as 1.23e-9 n

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

number of electrons for neutral cl

part 1: which substance has a higher solubility?

a

smallest amount left undissolved atall temps in table shown most has dissolved high sol'by

3. dark matter

empty space could also be a simple vacuum