you have some ball-bearings.the weight of one ball-bearing is so small that it cannot be found with a triple-beam balance.its weight is too small.the instructions below show a method.complete the instructions.
a.weigh an empty beaker(W1)
b.put 100 ball-bearings in the beaker and weigh again(W2)
c.find the weight of 1100 ball-bearings by__
d.find the weight of one ball-bearing by__
100001^^
2007-10-27 1:46 am
回答 (1)
2007-10-27 4:07 am
✔ 最佳答案
Weight of empty beaker = W1Weight of 100 ball-bearings and beaker = W2
Weight of 100 ball-bearings = W2 - W1
c. The weight of 1100 ball-bearings is 11 * (W2 - W1)
d. The weight of one ball-bearing is (W2 - W1)/100
I hope this can help your understanding.
參考: Myself
收錄日期: 2021-04-13 14:10:49
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