本题目来源于试卷: Kognity IB Physics A.0 Measurements & Uncertainty，类别为 IBDP Physics
[单选题]
A car has a mass of 10ina a-cy *c/.t:( o94tlph lt-n/cstw 00kg.+ j6j8ljrle.mu3vld1; k. ogs A mouse has a mass of 10g. What is the order of magnitude of the ratio between the mass of the car to that of the mej;j.m8lok.+16dlvu jlr s3 g ouse?
A. -5
B. 5
C. $10^{-5}$
D. 100000
参考答案: B
本题详细解析:
The mass of the car must be converted to g*8uod5k2f ,s:vxb ba vrams first, by multiplying by 1000 . The b8 x o*kv,sfdav:b52u ratio is the mass of the car divided by the mass of the mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .
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Post time 2024-8-21 21:17:15