Context and question: Off-grid PV systems have traditionally used rechargeable batteries to store excess electricity. With grid-tied systems, excess electricity can be sent to the transmission grid, while standard grid electricity can be used to meet shortfalls. Net metering programs give household systems a credit for any electricity they deliver to the grid. This is handled by 'rolling back' the meter whenever the home produces more electricity than it consumes. If the net electricity use is below zero, the utility then rolls over the kilowatt hour credit to the next month. Other approaches involve the use of two meters, to measure electricity consumed vs. electricity produced. This is less common due to the increased installation cost of the second meter. Most standard meters accurately measure in both directions, making a second meter unnecessary.
Why is a second meter usually unnecessary to monitor electricity use?
Answer: Most standard meters accurately measure in both directions
Context and question: During the Cretaceous, the late Paleozoic-early Mesozoic supercontinent of Pangaea completed its breakup into present day continents, although their positions were substantially different at the time. As the Atlantic Ocean widened, the convergent-margin orogenies that had begun during the Jurassic continued in the North American Cordillera, as the Nevadan orogeny was followed by the Sevier and Laramide orogenies. Though Gondwana was still intact in the beginning of the Cretaceous, Gondwana itself broke up as South America, Antarctica and Australia rifted away from Africa (though India and Madagascar remained attached to each other); thus, the South Atlantic and Indian Oceans were newly formed. Such active rifting lifted great undersea mountain chains along the welts, raising eustatic sea levels worldwide.
What supercontinent stayed intact during the Cretaceous?
Answer: unanswerable
Context and question: In the revival movement France held a foremost place, owing to the reputation and convincing power of the orator, Jean-Baptiste Henri Lacordaire (18021861). He took the habit of a Friar Preacher at Rome (1839), and the province of France was canonically erected in 1850. From this province were detached the province of Lyon, called Occitania (1862), that of Toulouse (1869), and that of Canada (1909). The French restoration likewise furnished many laborers to other provinces, to assist in their organization and progress. From it came the master general who remained longest at the head of the administration during the 19th century, Pere Vincent Jandel (18501872). Here should be mentioned the province of St. Joseph in the United States. Founded in 1805 by Edward Fenwick, afterwards first Bishop of Cincinnati, Ohio (18211832), this province has developed slowly, but now ranks among the most flourishing and active provinces of the order. In 1910 it numbered seventeen convents or secondary houses. In 1905, it established a large house of studies at Washington, D.C., called the Dominican House of Studies. There are now four Dominican provinces in the United States.
What country held a prominent place in the revival movement?
Answer:
France