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.

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

Which is not true about oxygen-17 and oxygen-18?

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?