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sergeinik [125]
3 years ago
15

On a hot day, Dave is relaxing by the pool. He touches the concrete next to the pool and then touches the surface of the water.

Which one do you think felt hotter to Dave? Explain your answer.
Physics
2 answers:
Alenkasestr [34]3 years ago
5 0

Answer:

the concrete because the concrete absorbs the suns energy, making it hot

Explanation:

<u><em>Please give me brainliest</em></u>

natita [175]3 years ago
4 0

The concrete is darker so absorbs more heat.

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Answer:

The angle between two forces is 165 degrees.

Explanation:

We have,

Force 1, F_1=27\ N

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It is required to find the angle between two forces. The resultant of two force is given by the formula as follows :

F=\sqrt{F_1^2+F_2^2+2F_1F_2\cos\theta}

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So,

F^2=F_1^2+F_2^2+2F_1F_2\cos\theta\\\\\cos\theta=\dfrac{F^2-F_1^2-F_2^2}{2F_1F_2}\\\\\cos\theta=\dfrac{(8)^2-(27)^2-(30)^2}{2\times 27\times 30}\\\\\cos\theta=-0.966\\\\\theta=\cos^{-1}\left(-0.966\right)=165^{\circ}

So, the angle between two forces is 165 degrees.

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