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olganol [36]
3 years ago
12

Which of the following is equal to 0.000539?

Chemistry
1 answer:
Flauer [41]3 years ago
7 0

Answer:

0.539 × 10-2 ............

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Round the following numbers to 3 significant figures.
ozzi

Explanation:

13. 8,448 = 8,450 (round up, 8 more than 5)

14. 89.32 = 89.3 (round down, 2 less than 5, 0 is not needed)

15. 0.05678 = 0.0568 (round up, 8 more than 5, 0 in front are not significant)

7 0
3 years ago
What is carbon sink and how it effects our environment?
Ronch [10]

Answer:

Explanation:

Carbon sink is basically anything that absorbs carbon from the atmosphere.   Particularly, the soil, trees, plants and the ocean absorb the most carbon, which helps with greenhouse emission.

5 0
2 years ago
Which of the following statements regarding radiation are FALSE?
kari74 [83]

Answer:

All of the given statements are true.

Explanation:

All the elements are heavier than Bismuth (Bi) are radioactive.

The time for half of the original sample to spontaneous decay is called half life (t_{1/2})

t_{1/2}=\frac{ln\:2}{\lambda}\\\lambda\:is\:the\:radioactive\:decay\:constant

All radioactive elements are spontaneously decaying towards formation of a stable element.

Radioactive elements undergo decay in order to attain stability.

Radioactivity is a natural part of our environment. The earth also contains several primordial long-lived radioisotopes that have survived to the present in significant amounts.

Hence, all the given statements are true.

5 0
3 years ago
A male construction worker regularly consumes 18 000 kJ of energy per day. Suggest the effects this could have on his health.
Romashka [77]

Answer:

It could lead to Fatigue

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Aches, pains, and tense muscles.

Chest pain and rapid heartbeat.

Explanation:

8 0
3 years ago
What is an echo? (1 point)
zaharov [31]

Answer:

The reflection of sound waves

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An echo is a reflection of sound that bounces of of one thing to another.

4 0
3 years ago
Read 2 more answers
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