3 years ago

Which option is an example of a physical property?

Physics

2 answers:

Vanyuwa [196]3 years ago

7 0

Density is a physical property

Grace [21]3 years ago

3 0

Answer:

The answer is A density

Explanation:

I did the quiz

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Write the chemical formula for the following diagrams.

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A 95.0kg weightlifter pushes on a 800,000 kg wall for 400s but it does not move. How much work does he do on the wall?

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4 years ago

A metal rod 80cm long lengthens by 0.090cm when its temperature rises by 93.6$^o$C. What is the linear expansivity of the metal

alexandr1967 [171]

Answer: (b)0.000012/k

Explanation:

The linear expansion of the metal rod is given by

$\Delta L= L_0 \alpha \Delta T$

where

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$L_0 = 80 cm$ is the initial length of the rod

$\alpha$ is the linear expansivity

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By re-arranging the equation, we find the linear expansivity:

$\alpha = \frac{\Delta L}{L_0 \Delta T}=\frac{0.090 cm}{(80 cm)(93.6K)}=0.000012 K^{-1}$

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