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LuckyWell [14K]
3 years ago
12

Please help me out i'm so depressed and such a failure

Physics
1 answer:
aksik [14]3 years ago
4 0

Answer:

I reckon towards b. Let me know if im right

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A stationary 15 kg object is located in a table near the surface of the earth. The coefficient of static friction between the su
Marta_Voda [28]

The net force acting on the object perpendicular to the table is

∑ F[perp] = F[normal] - mg = 0

where mg is the weight of the object. Then

F[normal] = mg = (15 kg) (9.8 m/s²) = 147 N

The maximum magnitude of static friction is then

0.40 F[normal] = 58.8 N

which means the applied 40 N force is not enough to make the object start to move. So the object has zero acceleration and does not move.

8 0
2 years ago
A rectangular field is 300 meters long and 300 meters wide. What is the area of the field in square kilometers? Do not round you
dexar [7]

Answer:

Area of the rectangular field in kilometers is 0.09 km^2

Explanation:

We know that 1 kilometers = 1000 meters

                    since we need to find the area in unit of kilometers

                    therefore converting length and width into kilometers

           1000 meters = 1 kilometers

             300 meters =\frac{300}{1000} = 0.3

         Likewise  width  = 0.3 km

Area = length x width

         = 0.3km x 0.3 km

        = 0.09 km^2

       

6 0
3 years ago
The change from a solid to a liquid occurs at _____.
NNADVOKAT [17]
At the melting point
8 0
3 years ago
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I was an American inventor and businessman who is best known for inventing the electric light bulb. Who am I?
wel
You are Thomas Alva Edison.  You also invented the phonograph
and the first practical movie camera.  Sadly, you died almost exactly
9 years before I was born.
4 0
3 years ago
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Why is the use of carbon-14 limited
Luden [163]

Carbon-14 is naturally created with the interaction of high-energy cosmic rays with atmospheric nitrogen. As part of the atmosphere, living organisms take in the carbon and incorporate this into living tissues. As long as the organism is alive and breathing, it keeps adding new carbon-14. When the organism dies, it stops gaining carbon-14 - or anything else, of course.


Carbon-14 is slightly radioactive, with a half-life of about 5700 years. If we assume that the atmospheric production of carbon-14 has been steady for the last 100,000 years, we can calculate the approximate age of when the organism died by determining what percentage of carbon-14 still exists in the dead material.


Paleo-archaeologists and anthropologists use this information when studying old cultures and civilizations.


8 0
3 years ago
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