Ik you didnt do the lab but like idek... Which statement best describes what was demonstrated about speed and pitch in the "Doppler Effect" lab?

Speed and direction do not affect pitch.

Speed and direction affect pitch.

Direction affects pitch but not speed.

Speed affects pitch but not direction.

A10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. which one has the greater buoyant force on it? explain. b - the aluminum a) both have the same buoyant force. b) the aluminum c) the lead d) it cannot be determined without knowing their volumes.