Select the correct answer. What is the force that can cause two pieces of iron to attract each other?
A.
gravitational force
B.
magnetic force
C.
elastic force
D.
electrostatic force

What must be the same for any two resistors that are connected in series ? a. the potntial diffrence across each b. the rate at which charge moves through each c. the rate at which energy is used by each d. the resistance to the flow of charge of each

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

What was the purpose of the apollo program? to put a man in orbit to launch a spy satellite to launch a space station to put man on the moon