Apply the grid method to each situation. a. If the pressure is 15 inches of water (vacuum), what is the gage pressure in kPa? b. If the pressure is 140 kPa abs, what is the gage pressure in psi? c. If a gage pressure is 0.55 bar, what is absolute pressure in psi? d. If a person’s blood pressure is 119 mm Hg gage, what is their blood pressure in kPa abs?

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Hydrogen Energy

Energy is a quantity that cannot be defined, its existence can only be felt. In simple language, if a system possesses energy, it can do a specific kind of work. There are many forms of energy sources which people can use to obtain work. Solar energy, tidal energy, hydroelectric energy, geothermal energy, wind energy are some of the renewable energy sources which are primarily used for the production of electricity.