What is the medium of the wave shown in the photograph

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.

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.