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Một miếng chì khối lượng 80g và 1 miếng đồng khối lượng 300g cùng dc đun nóng đến 100 độ C rồi thả vào 1 châu nước. Nhiệt độ cuối cùng của nước là 60 độ C. Hỏi nhiệt lượng nước thu vào là bao nhiêu?
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*** Give the correct form of the word in brackets to complete the passage. The development of the sport of skateboarding can be traced back to the early 1890s, when children in California first used wooden boards to 'surf' the streets. During the 1950s, the popularity of the sport increased and manufacturers began producing the first factory-made boards. By the 1960s, the sport had gained an (31) IMPRESS following, not just in the USA, but (32) WORLD. However, by 1965, concerns about (33) SAFE resulted in regulations being introduced to ban skateboarding in most public places in the USA. This (34) EFFECT killed the sport there for the next decade. Companies that had been making a fortune selling skateboards suddenly faced huge (35) LOSE and many went out of business. Over the next eight years a few (36) ENTHUSIASM continued practicing the sport but, although they tried hard to raise its profile, they were (37) SUCCESS in their efforts. Then in 1973, some technological breakthroughs revolutionized the sport. The invention of new materials meant that manufacturers could (38) STRONG the boards but at the same time make them lighter and more maneuverable. Such (39) IMPROVE also made the boards less dangerous and (40) PRESS from an increasing number of users led to the installation of special skateboarding parks. Despite the various setbacks it has suffered over the years, the sport is now stronger than ever. Giúp mình gấp với ạ, cảm ơn ạ

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