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neonofarm [45]
3 years ago
8

Need help before 10pm tomorrow night

Physics
1 answer:
konstantin123 [22]3 years ago
5 0
The first one is A and the second one would be C
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How many significant figures are in 107 moles of sodium
Blizzard [7]

Answer:

3 significant figures

Explanation:

here  zero is counted as one of the significant figures since it lies next to an integer.

hence the number has 3 sfg

8 0
2 years ago
a woman walks south at a speed of 2.0mph for 60 minutes. She then turns around and walks north at a distance of 3000m in 25 minu
TiliK225 [7]

When a  woman walks south at a speed of 2.0mph for 60 minutes. She then turns around and walks north at a distance of 3000m in 25 minutes. then the woman's average speed during her entire motion would be  73.15 meters /minute.

<h3>What is speed?</h3>

The total distance covered by any object per unit of time is known as speed.

the mathematical expression for speed is given by

speed = total; distance /total time

As given in the problem a woman walks south at a speed of 2.0mph for 60 minutes

60 min = 1 hour

1 mile = 1.60934 km

The distance covered by her southwards  =  speed ×time

                                                                      =2 mph × 60 minutes

                                                                      = 3.218 km

She then turns around and walks north at a distance of 3000m in 25 minutes

The distance covered northward is 3000m

speed = total distance /total time

          =(3218 +3000) /(60+25)

          =73.15 meters /minutes

Thus, The average speed of the woman would be 73.15 meters /minute.

Learn more about speed from here

brainly.com/question/13263542

#SPJ1

8 0
1 year ago
What is the following atmospheric property associated with?
Nadya [2.5K]

Answer:

Your answer should be Cooled Air

Explanation:

6 0
2 years ago
Which part of an atom has most of its mass? A. electrons B. neutrons C. nucleus D. protons
vredina [299]

<em>The </em><em>nucleus</em><em> has most of the atomic mass in an atom. The </em><em>nucleus</em><em> is made up of protons and neutrons.</em>

<em />

6 0
3 years ago
Read 2 more answers
Why is traveling between the stars (by creatures like us) difficult?
mariarad [96]

Answer:

Stars are at large distances that even light takes thousands of years to reach us from there.

for example, alpha centauri is 4300 light years away from earth and it is considered the nearest star to us, this means that light from there takes 4300 years to reach us and with a spaceships that can move with the speed of light is would take us 4300 years to get there which is imposible to live for that long.

hence, it is difficult to move between the stars.

4 0
3 years ago
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