When separated by distance d, identically charged point-like objects A and B exert a force of magnitude F on each other. If you reduce the charge of A to one-fourth ts original value, and the charge of B to one-fifth, and reduce the distance between he objects by half, what will be the new force that they exert on each other in terms of force F?

There are three objects: A, B, and C. You know that A is positively charged. When object A is brought near object B, they attract. When object B is brought near object C, they also attract. What can you say about the charge of object B?(a) Object B CAN be either neutral or negative. (b) Object B MUST be neutral.(c)  Object B CAN be either neutral or positive.(d)  Obejct B MUST be positive.(e)  Object B MUST be negative.

A charge of -2.50 nC is placed at the origin of an xy-coordinate system, and a charge of 2.40 nC is placed on the y-axis at y= 4.30 cm a)if a third charge, of 5.00 nC, is now placed at the point x= 3.05 cm, y= 4.30 cm find the x and y components of the total force exerted on this charge by the other two charges. b) Find the magnitude of this force.express in newtons  c)Find the direction of this force. Express your answer in degrees.

Two conducting spheres have identical radii.Initially they have charges of opposite signand unequal magnitudes with the magnitudeof the positive charge larger than the magnitude of the negative charge. They attracteach other with a force of 0.287 N when separated by 0.6 m.The spheres are suddenly connected by a thinconducting wire, which is then removed.Now the spheres repel each other with a forceof 0.031 N.What is the magnitude of the positivecharge?Answer in units of C. What is the negative charge?Answer in units of C.