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  2. Duty cycle - Wikipedia

    en.wikipedia.org/wiki/Duty_cycle

    Thus, a 60% duty cycle means the signal is on 60% of the time but off 40% of the time. The "on time" for a 60% duty cycle could be a fraction of a second, a day, or even a week, depending on the length of the period. Duty cycles can be used to describe the percent time of an active signal in an electrical device such as the power switch in a ...

  3. Massachusetts - Wikipedia

    en.wikipedia.org/wiki/Massachusetts

    In addition to the Federal Residential Renewable energy credit, Massachusetts residents may be eligible for a tax credit of up to 15 percent of the project. [175] Once installed, arrays are eligible for net metering. [176] Certain municipalities will offer up to $1.20 per watt, up to 50 percent of the system's cost on PV arrays 25 kW or less. [177]

  4. Czech Republic - Wikipedia

    en.wikipedia.org/wiki/Czech_Republic

    On average, summer temperatures are about 20–30 °C (36–54 °F) higher than during winter. Summer is also characterized by rain and storms. Autumn generally begins in September, which is still warm and dry. During October, temperatures usually fall below 15 °C (59 °F) or 10 °C (50 °F) and deciduous trees begin to shed their leaves. By ...

  5. Wealth inequality in the United States - Wikipedia

    en.wikipedia.org/wiki/Wealth_inequality_in_the...

    [31] [32] The Urban-Brookings Tax Policy Center found that the bottom 20 percent of earners pay an average 2.9 percent effective income tax rate federally, while the richest 1 percent paid an effective 29.6 percent tax rate and the top 0.01 percent paid an effective 30.6 percent tax rate. [33]

  6. 100% renewable energy - Wikipedia

    en.wikipedia.org/wiki/100%_renewable_energy

    The 280 MW Solana Generating Station is designed to provide six hours of energy storage. This allows the plant to generate about 38 percent of its rated capacity over the course of a year. [4] Comparing trends in worldwide energy use, the growth of renewable energy to 2015 is the green line [5]

  7. 1968 United States presidential election - Wikipedia

    en.wikipedia.org/wiki/1968_United_States...

    The 1968 United States presidential election was the 46th quadrennial presidential election, held on Tuesday, November 5, 1968.The Republican nominee, former vice president Richard Nixon, defeated both the Democratic nominee, incumbent vice president Hubert Humphrey, and the American Independent Party nominee, former Alabama governor George Wallace.

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