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Rainbow [258]
3 years ago
15

A dog sits on a flat surface. If the dog has a mass of 13 kg, what is the normal force acting on it?

Physics
1 answer:
maksim [4K]3 years ago
7 0

Answer:

127

Explanation:

f(n)=mg

(13)*(9.81)

127.4N

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Canada’s northern territories experience "midnight sun," meaning what?.
Leona [35]

Answer:

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An iron nail is made up of particles. What is true about the particles?Why does ice float on water?
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4 0
3 years ago
600 pages of a book have a total mass of 0.6kg; calculate the mass of each sheet of paper in the book in (i) Kilograms (ii) Mill
Alina [70]

Answer:

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Explanation is attached to the picture

hope this helps

brainliest plz

6 0
4 years ago
20 J of energy was used to
Leto [7]

Answer:

0.3m

Explanation:

Given parameters;

Elastic energy  = 20J

Spring constant = 445N/m

Unknown

Final extension of the spring  = ?

Solution:

The elastic potential energy of a stretched spring can be determined using the expression below;

         

           EP  = \frac{1}{2} k e²

k is the spring constant

e is the extension

  Insert the parameters and solve;

          20  = \frac{1}{2} x 445 x e²

        multiply those sides by 2;

         2(20) = 445e²

            40  = 445e²

              e² = \frac{40}{445}   = 0.09

              e  = √0.09 = 0.3m

6 0
3 years ago
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