The higher the solar fraction, the greater the solar contribution to water heating, which reduces the energy required by the backup water heater. The solar fraction varies from 0 to 1.0. Typical solar factors are 0.5â0.75. Don't choose a solar water heating system based solely on its energy efficiency.
Price of a Stamp. The current price of a first class stamp is 49 cents. A domestic first class letter (1 oz.) is 49 cents. The price of each additional ounce is 21 cents. It will cost you 34 cents to send a domestic postcard.
Postal Service seeks 50-cent stamp prices. Mired in red ink, the U.S. Postal Service is warning it will lose as much as $18.2 billion a year by 2015 unless Congress grants it new leeway to eliminate Saturday delivery, slow first-class mail by one day and raise the price of a postage stamp by as much as 5 cents.he new prices lift the cost of a first-class stamp to 45 cents starting on January 22, 2012, the first increase in more than two years. Post office announces 1-cent increase in first-class stamp, other rate increases.