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ikadub [295]
3 years ago
15

What two sources of friction do you have to overcome when you are walking?

Physics
2 answers:
yuradex [85]3 years ago
5 0

Answer:  When walking the two forces you have to overcome are gravity and the ground pushing you up.

Explanation:

tatuchka [14]3 years ago
3 0
<span>
Gravity is pushing you down on the earth while the friction from the ground is pushing you up. Those are the two frictions you must overcome when walking.






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A dog exerts a force of 30N to move a wagon 2m in 5s. What is the power of the dog?<br> help me
PolarNik [594]

Answer:

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Explanation:

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4 0
2 years ago
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Number 5 and 6 i need just give answer
sashaice [31]

Explanation:

voltage = current × resistance

5.

12 V = 4.2 A × resistance

resistance = 12 V / 4.2 A = 2.857142857... Ohm

FYI :

4.2 A would be a lot for a small electronic device like a CD player. that would be 12×4.2 = 50.4 Watt, and the CD player would get really hot.

6.

120 V = current × 12 Ohm

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8 0
2 years ago
You pull with a force of 77 N on a piece of luggage of mass 23 kg, but it does
Vinvika [58]

Answer:

The force of static friction acting on the luggage is, Fₓ = 180.32 N

Explanation:

Given data,

The mass of the luggage, m = 23 kg

You pulled the luggage with a force of, F = 77 N

The coefficient of static friction of luggage and floor, μₓ = 0.8

The formula for static frictional force is,

                                      Fₓ = μₓ · η

Where,

                                  η - normal force acting on the luggage 'mg'

Substituting the values in the above equation,

                                   Fₓ = 0.8 x 23 x 9.8

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Hence, the minimum force require to pull the luggage is, Fₓ = 180.32 N

5 0
3 years ago
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N76 [4]

Answer:

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Explanation:

The order of magnitude of the distance from the sun to Earth can be calculated as follows:

c = \frac{x}{t}

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t: is the time = 8 min

Hence, the distance is:

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Therefore, the order of magnitude of the distance from the sun to Earth is 10⁸ km.

I hope it helps you!

5 0
3 years ago
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Answer:

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4 0
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