Why does ambulance sounds low pitched when it passes by Question 4 options:

A. Wavelength decreases so amplitude decreases

B. Wavelength expands so frequency gets lower

C. Wavelength contracts so frequency decreases

D. Wavelength decreases do amplitude increases

specific latent heat of fusion, lf, of a substance is defined as the amount of heat required to change a unit mass of the substance from solid to liquid state, without any change in the temperature.

explanation:

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

where’s the list ? the question is incomplete

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this