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Thepotemich [5.8K]

3 years ago

8

If there are 50 people per square kilometer in a city, and the area of the city is 1.5 × 10 square kilometers. What is the total

number of people in the city?

1 answer:

qaws [65]3 years ago

6 0

Answer:

750 people

Explanation:

From the question,

Number of people in the city = population density×Area of the city

N = D×A.......................... Equagtion 1

Where N = Number of people in the city, D = population density, A = Area of the city.

Given: D = 50 people per square kilometer, A = 1.5×10 square kilometer.

Substitute into equation 1

N = 50(1.5×10)

N = 750 people.

Hence the total number of people in the city is 750 people.

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An unknown number of identical light bulbs are connected to a 15 V battery in parallel. The current through the battery is 2 A.

zaharov [31]

Answer:

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3 bulbs are there from the analogy given above

Explanation:

7 0

3 years ago

Radiation from the Sun reaching Earth (just outside the atmosphere) has an intensity of 1.39 kW/m2. (a) Assuming that Earth (and

Zigmanuir [339]

Answer:

$F=5.8\times 10^{8}\ N$

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Explanation:

Given that

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$A=\pi (6370\times 10^3)^2\ m^2$

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As we know that pressure due to intensity given as

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$P=4.6\times 10^{-6}\ Pa$

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$F=5.8\times 10^{8}\ N$

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$F=G\dfrac{m.M}{r^2}$

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$r =1.5\times 10^{11}\ m$

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$F=35.57\times 10^{21}\ N$

7 0

3 years ago

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storchak [24]

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To find the average velocity, you must divide the distance by the change in time, which should look like v=d/t

Here is how you set up the equation-
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Once you divide 6.1 meters by 8.8 seconds, you should get a number that looks like 0.69318182.... however, I just rounded it to 0.693 meters per second. You can round it to whatever you like.

Hope this helped! If you have any questions about what I mentioned in my answer or explanation, feel free to comment on my answer and I’ll try to get back to you!

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Alika [10]

Answer:

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Explanation:

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1 year ago

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lutik1710 [3]

Answer:

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