2. Which of the 5 factors is defined as the force of air pushing down on Earth? (10 Points)
O humidity
air temperature
air pressure
O wind speed

five factors that determine the state and condition of the atmosphere and, therefore, influence and determine the weather. They include:

These factors can cause different properties in sections of the atmosphere or air masses. We often might think of the atmosphere as a large ball of air that encircles the Earth. While that is true, it is broken up into distinct sections with different physical properties. These properties are determined by the five factors just mentioned, and the differences in the properties between air masses are what cause the changes in our weather.

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.