Which of the following is true of elements in the same group or family A they are likely to have the same number of electron orbital shells B their atomic numbers are close together C they have similar atomic masses D they are likely to have similar chemical compounds

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?

If we compare the force of gravity to strong nuclear force, we could conclude that