1. Judging  from its unit W/m.K can we define thermal conductivity of a  material as the rate of heat transfer through the material per unit thickness per unit temperature difference? Explain. 2.How does heat conduction differ from convection? 3. Does any of the energy of the sun reascht the earth by conduction or convection?

Discuss and Illustrate the 3 modes of heat transfer.

In an experiment to measure the specific heat of material, a student first measured the masses of the following samples as given in Table 1. Table 1: Measurement of Mass Physical quantity measured in (g) Value Mass of Styrofoam 2.4 cup Mass of Styrofoam 62 cup + water Mass of Brass sample 15.3 Mass of Copper sample 62.5 and then recorded the temperatures of the above two samples, in Table 2. Table 2: Measured values of Temperatures Hot termperature ("C ) Sample Equilibrium cold temperature ( C) temperature ("C) Brass 99.8 26.5 24.5 Сopper 99.8 32 26 Answer the following questions using the data given in Table 1 and Table 2. (Please enter the answers with two digits after decimal) (a) Calculation of specific heat capacity of Brass: Calculated Quantities Mass of the water (in Values grams) Change in temperature lof the hot object ( ATobieca) °C) Change in temperature of water (ATwaer) (°C) Calculated specific heat of the object in (cal/g'C) (b) Calculation of the specific heat capacity…