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 has a mass of 15sgi5i1pi++dpb ju+v 0g. What is the order zy 4cd6+oiya )n+2 hs m6irqgibi07f/of magnitude of the ratio between the mass of the car toi i+go4mr6)dacb+n6hqsy 720iiy z f/ 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 fk6 4x- k81b jxlil jl.nj/6qomirst, by multiplying by 1000 . The ratio is the mass of theokq lb6n1x8/ jkl. l6xijm- 4j 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