the extension in an elastic string varies directly as the weight hung on it. If a weight of 150 g produces an extension of 2.8 cm, what weight would be produce an extension of 19.6 cm?
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48
If 150g produces 2.8 cm extension.
Therefore,
19.6 cm = 19.6 / 2.8 × 150
7 × 150 = 1050 g
Therefore,
19.6 cm = 19.6 / 2.8 × 150
7 × 150 = 1050 g
joe30:
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Answered by
8
ᏆҒ 150Ꮐ ᏢᎡϴᎠႮᏟᎬՏ 2•8ᏟᎷ ᎬХͲᎬΝՏᏆϴΝ
19•6 Х 150
___________
28
= 1960 Х 15
________
28
= 29400
______
28
= 1055
= 1 ᏦᏀ 50 Ꮐ
ᎻᎬᎡᎬ ᏆՏ ᎽϴႮᎡ ᎪΝՏᏔᎬᎡ ᏴᎡϴ
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