Problem: The large magnitude of solar energy available makes it a highly appealing source of electricity. The United Nations Development Programme in its 2000 World Energy Assessment found that the annual potential of solar energy was 1,57549,837 exajoules (EJ). This is several times larger than the total world energy consumption, which was 559.8 EJ in 2012.
What is solar energy's yearly potential?
The answer is the following: 1,57549,837 exajoules (EJ)

Problem: Her tenth studio album, Confessions on a Dance Floor, was released in November 2005. Musically the album was structured like a club set composed by a DJ. It was acclaimed by critics, with Keith Caulfield from Billboard commenting that the album was a "welcome return to form for the Queen of Pop." The album won a Grammy Award for Best Electronic/Dance Album. Confessions on a Dance Floor and its lead single, "Hung Up", went on to reach number one in 40 and 41 countries respectively, earning a place in Guinness World Records. The song contained a sample of ABBA's "Gimme! Gimme! Gimme! (A Man After Midnight)", only the second time that ABBA has allowed their work to be used. ABBA songwriter Bjorn Ulvaeus remarked "It is a wonderful track100 per cent solid pop music." "Sorry", the second single, became Madonna's twelfth number-one single in the UK.
What was the name of Madonna's tenth studio album?
The answer is the following: Confessions on a Dance Floor

Problem: Cultural depictions of dogs in art extend back thousands of years to when dogs were portrayed on the walls of caves. Representations of dogs became more elaborate as individual breeds evolved and the relationships between human and canine developed. Hunting scenes were popular in the Middle Ages and the Renaissance. Dogs were depicted to symbolize guidance, protection, loyalty, fidelity, faithfulness, watchfulness, and love.
What scenes were popular in art during the Middle Ages?
The answer is the following: Hunting

Problem: Because the rotor is much lighter in weight (mass) than a conventional rotor formed from copper windings on steel laminations, the rotor can accelerate much more rapidly, often achieving a mechanical time constant under one ms. This is especially true if the windings use aluminum rather than the heavier copper. But because there is no metal mass in the rotor to act as a heat sink, even small coreless motors must often be cooled by forced air. Overheating might be an issue for coreless DC motor designs.
The lack of a metal mass in the core causes what function to be absent?
The answer is the following:
heat sink