A plant uses carbon dioxide and water to form food and oxygen. Why is this a chemical change? A. The mass of the plant increases greatly.

B. The properties of water and food are same.

C. The plant increases in height as food is produced.

D. The properties of carbon dioxide and oxygen are different.

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

Carbon tetrachloride (ccl4) is ionic or convalent

Three resistance 4,4 and 6 ohms are joined in the series.the total resistance will be