Apiece of wood has a density of 0.93 g/ml and a mass of 23 g what is the volume?

Given:

Density: 0.93 g/mL                                                                              

 Mass: 23 g

Volume = Density/Mass

Substituting the given values in this equation we get

Volume = 23 g ÷ 0.93 g/ mL                                                            

 Volume = 24.73 mL

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.