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3 years ago

Why do some transportation agencies spread a mixture of sand and salt on icy roads in winter?

Physics

1 answer:

timofeeve [1]3 years ago

4 0

Answer:While workers use salt to melt ice they rely on sand for improved traction

Explanation:Sand increases friction and help prevent vehicle tires from slipping on silk roads making traveling easier, Salt can also help prevent new ice from forming on roads

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What does AC stand for in physics?

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Alternating current

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CN you help me with this question?

qaws [65]

25% i believe because if were talking 50 percent half it would be 25.

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2 years ago

Who is known as the father of India

balandron [24]

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the answer is

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The temperature and time t given in hours from 0 to 24 after midnight in downtown mathville is given by t=10-5 sin(pi/12 t) degr

Dvinal [7]

Answer:

$T_A_v_g=9.918192559$^{\circ}C$

Explanation:

The problem tell us that the temperature as function of time in downtown mathville is given by:

$T(t)=10-5*sin(\frac{\pi}{12t})$

The average temperature over a given interval can be calculated as:

$T_a_v_g=\frac{T_o+T_f}{2}$

Where:

$T_o=Initial\hspace{3}temperature\\T_f=Final\hspace{3}temperature$

So, the initial temperature in this case, would be the temperature at noon, and the final temperature would be the temperature at midnight:

Therefore:

$T_o=T(12)=10-5*sin(\frac{\pi}{12*12}) =9.890925575$^{\circ}C$

$T_f=T(24)=10-5*sin(\frac{\pi}{12*24}) =9.945459543$^{\circ}C$

Hence, the average temperature between noon and midnight is:

$T_A_v_g=\frac{9.890925575+9.945459543}{2}=9.918192559$^{\circ}C$

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2 years ago

What has highest frequency in electromagnetic spectrum color?

natulia [17]

In Electromagnetic spectrum, X-rays has very high frequency but gamma-rays has more than that. If you consider cosmic rays as an electromagnetic wave, then it would be highest energetic and has highest frequency.

In short, Your Answer is "Cosmic rays"

Hope this helps!

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3 years ago