Calculate the density of a rock that has a mass of 32 grams and a volume of

4.5 mL.

The density of a substance is 4.0 g/cm3. if a sample of the substance has a volume of 25 cm3 then what is the mass

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

Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity