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 102cjl-(jdt5flvcor 2 6 00kg. A td)kn3vkq )nwt1qixf 79/r g)mouse has a mass of 10g. What is the order of magnitude of the ratio betwk )v3tfnw)dtn 9/7kr)giqqx 1een the mass of the car to that of the mouse?
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 grams first, by multiplyi6ewn4irgmiv r+wzps:n 5) * -xn9is0ing by 1000 . The ra i9rin 5wmrvi4zs*g wx +:p)n-i6sen0tio 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