Cells, Cell Division) 1. Which of the following statements is NOT part of the cell theory?
a. Cells are the basic unit of structure and function in living things
b. All cells are produced from other cells.
C. Only animals are composed of cells.
d. All living things are composed of cells.

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.

answer: gold foil experiment - he shot alpha particles at a gold foil

explanation: