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a) Define the work W and the power P. What are their units? How much work W do you do when you lift a m =15kg suitcase h=1.5m off the ground? If the lifting is during t=.5s, how much power P are you expanding?

b) Calculate the expression of the pressure p from a fluid column of height h and its density p in the gravitational acceleration g=9.8m/s^{2}. Considering the density of water p=1gr/cm^{3}, find the total value of the pressure inside the water in a depth of 10m. (Atmospheric pressure is 1atm=101.3 kPa=101.3*10^{3} Pa)

c) Write 4 simple mathematical relationships between two quantities A and B. Try to design their graphical representations.

d) Design the thermal scheme of the heat engine. Write the general relationship for its efficiency *n*.

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