Heat(frictional heating, latent heat, thermal expansion etc)

Related BrainMass Solutions

• Heat and Thermodynamics: Change of state

  Latent heat problem: Describe the phenomenon of latent heat with respect to the process of heating a block of ice to eventually create steam.

• What causes thermal expansion?

  43073 What Causes Thermal Expansion? What causes thermal expansion?

• Thermal Expansion, Convection, Conduction and Radiation

  A) Thermal expansion b) Convection c) Conduction d) Radiation Solution: a) Thermal expansion occurs when an object's or substance's volume increases as temperature increases.

• Entropy change: Melt ice-water and heating water fr 0C-25C

  Basically what you have to consider here, is two changes: 1) State change Ice to Water (a latent heat change). 2) Heating of the water and the associated temperature change.

• dS = dq/T for irreversible processes

  The example of the gas cylinder was a bit trivial, as you could assume that throughout the heating of the cylinder, the cylinder itself stays in thermal equilibrium.

• Adiabatic Process

  Responds fully to the question: What is the relationship between the processes of adiabatic cooling and heating, evaporation, condensation, and the exchange of latent heat?

• Metal linear expansion problems

  If we heat up the ring only, does the ball fit? Why or why not? During the heating process, the linear nature of thermal expansion leads to expansion of objects.

• The Heat Equation on a Metal Ring

  Suppose that the ring has some internal heating that is angle-dependent, so that u(x, t) satisfies the inhomogeneous heat equation u_t = ku_zz + f(x), where k is the thermal diffusivity and f(x) describes the internal heating.

• Physics: Heat

  In the heat exchange within the system, following changes of state take place: 10 g of steam at 100^O C gives out latent heat of vaporization to convert into 10 g of water at 100^O C.