What would be the observation when pineapple juice is dipped in a red litmus paper​

What is the correct equation for cellular respiration?

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?