Influenza, commonly known as the flu , is an infectious disease caused by the influenza virus. Symptoms can be mild to severe. The most common symptoms include: a high fever, runny nose, sore throat, muscle pains, headache, coughing, and feeling tired.These symptoms typically begin two days after exposure to the virus and most last less than a week. The cough, however, may last for more than two weeks.ymptoms can be mild to severe. The most common symptoms include: a high fever, runny nose, sore throat, muscle pains, headache, coughing, and feeling tired. These symptoms typically begin two days after exposure to the virus and most last less than a week.
To figure out how many kilowatt-hours (kWh) your solar panel system puts out per year, you need to multiply the size of your system in kW DC times the .8 derate factor times the number of hours of sun. So if you have a 7.5 kW DC system working an average of 5 hours per day, 365 days a year, itâll result in 10,950 kWh in a year.
In the US, photovoltaic (PV) panels will see an average of 4â5 hours per day of full sun, so the effective capacity of solar power generation is 4.5/24, or about 20%. In 2011, statistics showed that US installed solar power, PV and thermal, totaled 4.9 GW, which produced 7454 GWh of energy.rice per watt history for crystalline silicon photovoltaic cells since 1977. Price per watt, or $/W is a common way to compare the capital costs of various forms of electricity generation. It refers to the number of dollars one would have to spend to buy a machine capable of producing one watt of electricity.