In a geothermal power plant, if the thermal efficiency is 20% and the heat extracted from the geothermal reservoir is 2000 MJ, calculate the electrical energy produced in megajoules (MJ).

A hydroelectric dam has a water flow rate of 800 cubic meters per second and a height of 150 meters. If the efficiency of the power generation is 90%, calculate the power output in megawatts (MW). (Use g = 9.8 m/s² for gravitational acceleration and the density of water = 1000 kg/m³)

A pumped-storage hydroelectric system pumps water to a height of 200 meters using 1,000 MWh of energy. If the system has an efficiency of 70%, calculate the potential energy stored in megawatt-hours (MWh).

A concentrated solar power (CSP) plant has a thermal efficiency of 25% and receives 10,000 MJ of solar energy per day. Calculate the electrical energy output per day in megajoules (MJ).

A biogas plant produces 1,200 cubic meters of biogas per day with an energy content of 22 MJ per cubic meter. Calculate the total daily energy production in megajoules (MJ).

A solar panel system with an area of 20 square meters has an efficiency of 18%. If the solar irradiance is 1000 W/m², calculate the total power output of the system.

A biogas plant produces 1,500 cubic meters of biogas per day with an energy content of 21 MJ per cubic meter. Calculate the total daily energy production in megajoules (MJ).

A solar panel with an area of 25 square meters and an efficiency of 20% is installed in a region receiving an average solar irradiance of 800 W/m². Calculate the total power output of the system in kilowatts (kW).

A wind turbine generates 750 kW at wind speeds of 14 m/s. If the wind speed drops to 11 m/s, calculate the new power output assuming the power output is proportional to the cube of the wind speed.

A hydroelectric dam has a water flow rate of 900 cubic meters per second and a height of 110 meters. If the efficiency of the power generation is 92%, calculate the power output in megawatts (MW). (Use g = 9.8 m/s² for gravitational acceleration and the density of water = 1000 kg/m³)