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 1000kg. A mouse h+l0rjr/;bz: n 9 szfdpas a mass of 10g. What 0p2b+pre+( dc 0kk. /m9nwbw 4a0l)qmztt pcsis the order of magnitude of the ratio between the mass of the car to thw0kraw e)pk q/+cmz0t.bntl4p90c (s2p+dmb at 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 +g0k3 fnak7vwto grams first, by multiplying by 1000 . The ratio is th03 a+7wfnkkv ge 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