pada pukul 18.00 masa suatu zat radio aktif 0.5kg jika laju peluruhan zat radioaktif tsb 2% setiap jam berapa sisa zat radioaktif pada pukul 20.00 wib
Answer (3)
1 mile=1,760 yards 67 miles = 117,920 yards that's > 116,920 yards
1 yard=3 feet 250 yards = 750 feet that's < 800 feet
1 yard = 3 feet 14 yards = 42 feet plus another 2 feet = 44 feet that's much > 16 feet
1 foot = 12 inches 34 feet = 408 inches plus another 10 inches = 418 inches that's < 518 inches
1 mile = 1,760 yards 5 miles = 8,800 yards that's already = to 8,800 yards, and we haven't even stuck the extra 8 feet on yet when we do that, it'll be > 8,800 yards by exactly 8 feet (2 and 2/3 yards)
The comparisons show that 67 miles is greater than 116,920 yards, 250 yards is less than 800 feet, and 14 yards and 2 feet is greater than 16 feet.
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Jawab:0,4802kgPenjelasan dengan langkah-langkah:mt=m0×(1−r)tr=0,02 (2%)t=2 jammt=0,5×(0,98)^20,98^2 = 0,96040,5×0,9604=0,4802kg
