Four charges are at the corners of a square, with B and C on opposite corners . Charges A and D, on the other two corners, have equal charge, while both B and C have a charge of +1.0 C. What is the charge on A so that the force on B is zero? a. -1.0 C
b. -0.50 C
c. -0.35 C
d. -0.71 C

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

Which fact supports the conclusion that there will be fewer farm managers in the future? a) a farmer manager’s duties vary by the type of farm. b) farm technology is replacing some administrative jobs c) farm managers often need experience but not education. d) administrative duties include budgeting and training staff.

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?