1.May used an empty bottle (capacity of the bottle=500ml) to carrydrops of water from the wather tap. The bottle was fully filled after 62 min. Estimate the volume of a drop of water, if the water dropped from the water tap in the speed of 30 drops per min. (corr.to the nearest 0.01 ml)
2.Find the range of the real weight of a pocket of sugar.(The measured weight of a pocket of sugar=125g,the perceneage error=0.4%)
F.2 math homework (Use Eng)
2007-09-26 7:41 pm
回答 (2)
2007-09-27 3:30 am
✔ 最佳答案
1. Drops of water=30x62
=1860
Volume of a drop of water
=( 500除1860 )mL
=0.27ml (corr.to the nearest 0.01 ml)
2. (max.error over 125)x 100%=0.4%
(max.error over 125)=0.004
max.error =0.5
the range =(124.5-125.5)
2007-09-26 7:46 pm
1. 500/62/30~0.27ml
2. 124.5-125.5
2. 124.5-125.5
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