If a chemical change occure A. the composition remains the same
B. there is a change in composition
C. the physical state of matter change
D. all the physical properties remain the same

b i think it’s a water wheel turning in a stream

35. a insulated cylinder of solid gold (k 310 kw/m-k) of radius v2 m and height 5 m is heated at one end until the temperature at each point in the cylinder is given by w(r, y, z) (30 z2)(2-(r2+ y2). determine the rate of heat flow across each horizontal disk given by z 1, z 2, and z 3, identifying which has the greatest rate of heat flow across it.

explanation:

d) nh3 give me brainliest