Why can't we measure temperature or build thermometer if there is no zeroth law? thanks

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

This is the number of complete movements of a wave per second.

which statements describe the image? check all that apply. the wood is releasing argon gas. this information is useful for dating ancient rock. the process works only with organic matter. the element has a half-life of 5,730 years. this shows the half-life of carbon-19.