Question

I need help with these two problems. I

got the formula for the second one but I don't understand how to solve for q and 2q in order to find x.

Please Help

1. +-/3 points SerPSE10 22.3.P.004 My Notes Ask Your Teacher Nobel laureate Richard Feynman (1918-1988) once said that if two persons stood at arm's length from each other and each person had 1% more electrons than protons, the force of repulsion between them would be enough to lift a "weight" equal to that of the entire Earth. Carry out an order-of-magnitude calculation to substantiate this assertion F~ 10 Need Help?ReadIt Submit Answer Save Progress 2.+-/2 points SerPSE10 22.3.P.007 My Notes Ask Your Teacher Two small beads having positive charges q1 = 29 and q,-q are fixed at the opposite ends of a horizontal insulating rod of length d = 1.50 m. The bead with charge q1 is at the origin. As shown in the figure below, a third small, charged bead is free to slide on the rod 1 42 (a) At what position x is the third bead in equilibrium? (b) Can the equilibrium be stable? O Yes, if the third bead has a positive charge O Yes, if the third bead has a negative charge No Need Help?ReadWatch

Answer 1

Assumption:-

Let the mass of each person =  

Distance between both the person   $r=1m$

If protons constitute half of total mass - other half being neutrons, there will be the same number of electrons as protons in neutral matter.

So, 1% electrons will be same as 1% protons.

therefore

which gives us the number of protons

Now,

If there is a net charge of 1% of total electrons than protons,

proton charge = eletron charge  

which is

So,

we know that

by plugging all the values we get

which gives us

Now,

The force required for lifting Earth,

gravitational force  

thus

So we can clearly see that  

Hence the assertion is ture