Why is it important that all scientists use the metric system?.

1 answer:

5 0

It is very important that all scientists use the metric system because it is universal - America is the only country that doesn't use the metric system, whereas in the rest of the world, metric system is used. So as not to confuse numbers and do something incorrectly, it is better to use metric system instead.

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If the world population grows at a constant rate of 1.8% per annum, how many years will it take to double? A) 17.7 years

AleksandrR [38]

Answer:

after 38.8 years it will double

correct option is D 38.8 years

Explanation:

given data

population grows rate = 1.8%

to find out

how many years will it take to double

solution

we consider here initial population is x

so after 1 year population will be = (100% + 1.8% ) x = 1.018 x

and after n year population will be = $1.018^{n} x$

so it will double

2x = $1.018^{n} x$

take log both side

log 2 = n log (1.018)

n = $\frac{log2}{log1.018}$

n = 38.853

so after 38.8 years it will double

correct option is D 38.8 years

4 0

2 years ago

If you see lightening bolt and count for 4 seconds before you hear the thunder how far away was the lightening strike ? It was n

rjkz [21]

well, you divide 4 by 5, so .8

.8 of a mile is 4224 feet.

i really hope this helps :)

4 0

3 years ago

A very long half-cylinder of radius r carries a total current is uniformly distributed across the circumference. Determine the m

Rufina [12.5K]

The magnetic field along the central axis of the cylinder will be <em>determined </em>using the formula given that all parameters are known

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