Three equal 1.05-μC point charges are placed at the corners of an equilateral triangle whose sides are 0.300 m long. What is the potential energy of the system? (Take as zero the potential energy of the three charges when they are infinitely far apart.)

Will you chech and finish these for me, because i am stumped with them.

Heterogeneous mixture with larger particles that never settle is

Blood pressure the total amount of blood the heart pumps in one minute 2. cardiac output the number of times your heart beats in a minute 3. dilate the amount of blood that the heart can pump in a single beat 4. heart rate the force exerted on the walls of the blood vessels by the blood that moves through them 5. stroke volume to widen or get larger in size