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patriot [66]
3 years ago
8

Newton's third law can be summarized as "every action has an equal and opposite reaction". In this problem, consider the action

of the entire Earth on a person standing at rest on the ground and the opposite reaction, where ‘action’ and ‘reaction’ are understood to mean ‘force’ and ‘reaction force’ What is the "equal and opposite" reaction force to the gravitational force of the Earth acting on the person?
Physics
1 answer:
scoundrel [369]3 years ago
7 0

Answer:

Action force: Would be the force of your feet against the Earth given by the weight defined as:

W = mg

Where g is a constat who represent the gravity g =9.8 m/s^2 in Earth

Reaction force: Would be the force of the Earth pushing against your feet. And on this case is represented by the normal force defined as:

N = \mu f_f

Where \mu represent the friction coefficient between the ground and the object.

And f_f the friction force.

If we don't have any other forces involved in the y axis we can conclude that:

W=N= mg

And as we can see we have that Action force = Reaction force

So then the third Law of Newton is satisfied.

Explanation:

For this case we have this:

Action force: Would be the force of your feet against the Earth given by the weight defined as:

W = mg

Where g is a constat who represent the gravity g =9.8 m/s^2 in Earth

Reaction force: Would be the force of the Earth pushing against your feet. And on this case is represented by the normal force defined as:

N = \mu f_f

Where \mu represent the friction coefficient between the ground and the object.

And f_f the friction force.

If we don't have any other forces involved in the y axis we can conclude that:

W=N= mg

And as we can see we have that Action force = Reaction force

So then the third Law of Newton is satisfied.

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Solve -7= sqrt 2x-9​
Sauron [17]

Answer:

x = 2

Explanation:

if it was -7 = the square root of both 2x-9 together, it would be false.

if it was square root of just 2x in the equation, the answer is:

x = 2

°°°°°°°°°

-7 = √2x - 9

-√2x = -9 + 7

√-2x = -2

√2x = 2

2x = 4

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Answer:

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89 {}^{2}  = 76 {}^{2}  + 2(10)h

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3 years ago
What is the highest and lowest frequency a human being can hear​
nata0808 [166]

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6 0
3 years ago
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Kaylis [27]

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If and then for example: If you get at least 6 hours of sleep, you will do better on tests than if you get less sleep.

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7nadin3 [17]

Explanation:

The power P dissipated by a heater is defined as

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a) The current running through a 130-W heater is

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b) The resistance <em>R</em><em> </em>of the heater is

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