The variables for Part I of this experiment include whether or not the car hits the barrier and the distance that the washers travel. Use the drop-down menus to identify the independent and dependent variables. The independent variable, the one that is intentionally manipulated, is
.

The dependent variable, the one that you measure the response in, is
___.

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

Explain earth's motion, using the terms "precession" and "rotation" in your answer.