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 : 4 zjjyf0o+scftwa7*o3(rxnof 10g. What is the order of mzd ;ki*rktjl1y0t g*i1tkg 3 *agnitude of the ratio between the mass of the car to that k3k l*d 1;ytggtir* z*0j1tik 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 beuu9d2ltic :tup,.umjc+z3 0 s converted to grams first, by multiplying by 1000 . The ratio is the mass of the car dividedmuccts30u : ., 9ld+2uu ptzji 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