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Mekhanik [1.2K]
3 years ago
15

Which of the following include exact numbers?

Chemistry
2 answers:
True [87]3 years ago
6 0

Answer:

The answer is C

Explanation:

Alchen [17]3 years ago
3 0

Answer:

The correct answer is the option: (c) There are 3600 s in 1 h.

Explanation:

Hello!

Let's solve this!

We will analyze each of the options:

(a) The speed of light in a vacuum is a physical constant; to six significant figures, it is 299792 x 108 rnis: not an exact number.

(b) The density of mercury at 25'C is 13.53 g / rriL: not an exact number.

(c) There are 3600 s in 1 h: it is an exact number since in one hour there are 60 minutes and in one minute 60 seconds, so 60 * 60 = 3600s is an exact number.

(d) In 2012, the United Slates had 50 stales: not an exact number.

We conclude that the correct answer is the option: (c) There are 3600 s in 1 h.

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Answer:

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Explanation:

Applying the formulae of velocity,

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From the question,

Given: d = 600 m, t = 5 minutes = (5×60) = 300 seconds.

Substitute these values into equation 1

V = 600/300

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Hence the velocity of the body when it travels is 2 m/s

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