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polet [3.4K]
4 years ago
15

The city is thinking about starting a program to add a new chemical to the public pool. Before they do, they want to find out if

there are any health risks associated with this type of chemical. Which group would be the best to advise them on this topic?
a group of concerned citizens who oppose the program
the company that manufactures the chemical
the local pest pool companies who would be hired to take care of the pool
the government agency that regulates these types of chemicals
Physics
1 answer:
Kitty [74]4 years ago
4 0
The best and most correct answer among the choices provided by the question is the fourth choice.


The best people for advising is <span>the government agency that regulates these types of chemicals.</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
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Highlight each sentence that is true about atoms, matter, and electric charge.
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3 years ago
In 1976, the SR-71A, flying at 20 km altitude (T = –56 0C), set the official jet-powered aircraft speed record of 3530 km/hr (21
Lapatulllka [165]

To solve this problem we will apply the concepts related to the calculation of the speed of sound, the calculation of the Mach number and finally the calculation of the temperature at the front stagnation point. We will calculate the speed in international units as well as the temperature. With these values we will calculate the speed of the sound and the number of Mach. Finally we will calculate the temperature at the front stagnation point.

The altitude is,

z = 20km

And the velocity can be written as,

V = 3530km/h (\frac{1000m}{1km})(\frac{1h}{3600s})

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From the properties of standard atmosphere at altitude z = 20km temperature is

T = 216.66K

k = 1.4

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Velocity of sound at this altitude is

a = \sqrt{kRT}

a = \sqrt{(1.4)(287)(216.66)}

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Then the Mach number

Ma = \frac{V}{a}

Ma = \frac{980.55}{296.049}

Ma = 3.312

So front stagnation temperature

T_0 = T(1+\frac{k-1}{2}Ma^2)

T_0 = (216.66)(1+\frac{1.4-1}{2}*3.312^2)

T_0 = 689.87K

Therefore the temperature at its front stagnation point is 689.87K

6 0
4 years ago
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Answer:

25 ×40

l think so not sure

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3 years ago
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marysya [2.9K]

Answer:

A) refused to vote and left the convention.

Explanation:

At the first Democratic Party convention of 1860, fifty Southern delegates <u>refused to vote and left the convention </u>

3 0
3 years ago
Read 2 more answers
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