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3 years ago

8

Please Help.....................................................

1 answer:

Anna71 [15]3 years ago

8 0

There are 13 protons because the atomic number (the number in the top left corner) represents the number of protons. Then, to find the number of neutrons, you take the number of protons and subtract it from the atomic mass (the number on the bottom) when it is rounded. The number of electrons is the same as the protons when the atom is neutral

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Will a 9/32 inch diameter pin fit into a reamed hole with a diameter of 0.278 inch? (Do not round off your answer and express it

ollegr [7]

Answer:

9/32 inch diameter pin will not fit into a reamed hole with a diameter of 0.278 inch

Step-by-step explanation:

Diameter of reamed hole = 0.278 inch

Radius of reamed hole = $\frac{0.278}{2} =0.139$

Surface area of reamed hole = $\pi r^2$

Surface area of reamed hole = $3.14 \times (0.139)^2$

Surface area of reamed hole = 0.06066794

Diameter of pin = $\frac{9}{32}$

Radius of pin = $\frac{9}{64}$

Surface area of pin = $\pi r^2 = 3.14 \times ( \frac{9}{64})^2=0.0620$

Since the surface area of pin is more than the surface area of hole .

So, a 9/32 inch diameter pin will not fit into a reamed hole with a diameter of 0.278 inch

7 0

3 years ago

4×<img src="https://tex.z-dn.net/?f=10%5E%7B3%7D" id="TexFormula1" title="10^{3}" alt="10^{3}" align="absmiddle" class="latex-fo

Anettt [7]

4000 (4x10^3) times 400 (4x10^2) is equal to 16x10^5 ( 1,600,000)

5 0

3 years ago

Hiii please help i’ll give brainliest if you give a correct answer tysm!

taurus [48]

20 people

Reason - following the sequence

8 0

2 years ago

Stolb23 [73]

Step-by-step explanation:

option c 120

earning (in$) for 8 dog houses = 40

earning (in$) for 1 dog house= 40/8 = 5

earning (in$) for 24 dog houses= 24×5 = 120

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3 years ago

Which expression is equivalent to 60x^20y^24/30x^10y^12 ?

olganol [36]

Answer:

2x^(10)y^(12)

Hope This Helps! Have A Nice Day!!

8 0

3 years ago

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