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musickatia [10]
3 years ago
7

Kole travels from Joshua to Dallas and back a total of 100 miles in two hours what is the average speed of the car?

Chemistry
2 answers:
Flura [38]3 years ago
4 0

Answer:

50 miles per hour

Explanation:

To find the average speed per hour you have to find the unit rate so 100/2  which is 50. So 50 miles per hour.

adell [148]3 years ago
3 0

Answer: 50 mph

Explanation:

100 divided by 2 hours

Because if you think about it speed is miles per hours

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Gold has a density of 1,200 lb./ft. What is the density of gold in g/em? For conversion factors use I lb. 453.6 g, and l inch-2.
Jlenok [28]

<u>Answer:</u> The density of gold in g/cm^3 is 19.22g/cm^3

<u>Explanation:</u>

Density is defined as the ratio of mass of the object and volume of the object. Mathematically,

\text{Density}=\frac{\text{Mass of the object}}{\text{Volume of the object}}

We are given:

Density of gold = 1200lb/ft^3

Using conversion factors:

1 lb = 453.6 g

1 feet = 12 inches

1 inch = 2.54 cm

Converting given quantity into g/cm^3, we get:

\Rightarrow (\frac{1200lb}{ft^3})\times (\frac{453.6g}{1lb})\times (\frac{1ft}{12inch})^3\times (\frac{1inch}{2.54cm})^3\\\\\Rightarrow 19.22g/cm^3

Hence, the density of gold in g/cm^3 is 19.22g/cm^3

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Explanation:

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