1pt How can you make an observation? A. by using your senses or instruments to collect data
B. by forming logical conclusions from data
C. when you create a hypothesis
D. both A and B are correct

If you want to change the pitch of a sound, you have to change the

Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law