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3 years ago

How old do you have to be to vote?

2 answers:

7 0

In the United States of America, you must at least 18 years of age to vote.
_______________________________________________

liq [111]3 years ago

5 0

Answer:

In the United States of America, you must be 18 years of age to vote for the president, government officials, or state representatives.

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Assume that the Moon is hit by about 25 million micrometeorite impacts each day (this number comes from observations of meteors

mestny [16]

Answer:

3.03 Billion Days or 8.30 Million years

Explanation:

Given,

No. of micrometeorite impacts per day on the Lunar surface = 25000000

Impacts needed to erase a footprint = 20

Area of footprint = 300 cm²

We know that surface area of the Moon = 37.93 Million Km² = $37.93\times 10^{16} cm^{2}$

To find: How long will it take to erase one footprint?

Using the above information,

No. of impacts per cm² per day is

$= \frac{25000000}{37.93\times 10^{16}}$

No. of impacts on area of a foot print (300 cm²) per day will be,

$= \frac{25000000}{37.93\times 10^{16}}\times 300$

$= 6.59\times 10^{-9}$

To erase the footprint there must be 20 impacts on the area of footprint.

Time taken for $6.59\times 10^{-9}$ impacts = 1 Day

Time taken for 1 impact is

$= \frac{1}{6.59\times 10^{-9}} days$

Hence, time taken for 20 impacts will be

$= \frac{1\times20}{6.59\times 10^{-9}} days$

$= 3.03 \times 10^{9} days$

$= \frac{3.03 \times 10^{9}}{365}years$

$= 8.30 \times 10^{6} years$

It would take around 3.03 Billion Days or 8.30 Million years for one of the footprints left by the Apollo astronauts to be erased.

6 0

3 years ago

What tectonic setting is primarily responsible for producing the great san francisco earthquake and the san andreas fault?.

LekaFEV [45]

The pacific plate (on the west)

5 0

2 years ago

According to the online content article about using maps, which of the following map elements is used to understand the symbols,

vova2212 [387]

The answer is A. The legend.

I hope this helps, have a nice day.

3 0

2 years ago

Read 2 more answers

Can someone please help me

dangina [55]

Answer: Some are mountains valleys basins canyons buttes and hills.

Explanation:

7 0

2 years ago

Read 2 more answers

Which of the following is not a characteristic of a desert ecosystem? dry and hot covers one-half of the earth dry and cold few

Oksana_A [137]

Answer:

B.) Covers one-half of the earth

Explanation:

The desert doesn't cover one-half of the earth. In fact, true deserts only cover about 14 percent of the world's land area.

This might be a little late but I hope it helps. :)

3 0

3 years ago