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andre [41]
3 years ago
11

When Suzanna stands on the floor on the surface of the earth, of the two external forces acting on her, her perception or sensat

ion of weight directly depends on the upward force the floor exerts on her, not the downward force of gravity.
Physics
1 answer:
Vesna [10]3 years ago
5 0
<h2>Answer:</h2>

<em><u>Statement is True.</u></em>

<h2>Explanation:</h2>

<em><u>Yes, the given statement is True.</u></em> For a person to perceive or sense his/her weight there has to be a Normal Force acting on them upwards.

We can understand this as when a falls in the pit on the ground, for the time the person is in the air he/she feels weightless as they don't have any weight.

This weightlessness is felt even when the weight (mg) of the person is acting downwards. So we can conclude that for a person to feel his/ her weight there has to be a Normal Force acting back on them equal to their weight.

As, in the space station people feel like they are on Earth that is felt by them because of the rotation of the Space Station which generated the Normal force on their feet making them sense weight.

Therefore, for Suzanna, of the two external forces acting on her, her perception or sensation of weight is dependent on<em><u> the Upward Reaction Force from the Floor.</u></em>

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Which situation is NOT the result of an unbalanced force acting on an object? A. an object speeds up B. an object maintains spee
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The average velocity of blood flowing in a certain 4-mm-diameter artery in the human body is 0.28 m/s. The viscosity and density
OLga [1]

Answer:

V = 3.5 x 10⁻⁶ m³/s = 3.5 cm³/s

Explanation:

The volume flow rate of the blood in the artery can be given by the following formula:

V = Av

where,

V = Volume flow rate = ?

A = cross-sectional area of artery = πd²/4 = π(0.004 m)²/4 = 1.26 x 10⁻⁵ m²

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Therefore,

V = (1.26\ x\ 10^{-5}\ m^2)(0.28\ m/s)

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4 0
3 years ago
Help!!! I need it today <br> Thank you in advance
svlad2 [7]

Answer:

 F = - k (x-xo) a graph of the weight or applied force against the elongation obtaining a line already proves Hooke's law.

Explanation:

The student wants to prove hooke's law which has the form

          F = - k (x-xo)

To do this we hang the spring in a vertical position and mark the equilibrium position on a tape measure, to simplify the calculations we can make this point zero by placing our reference system in this position.

Now for a series of known masses let's get them one by one and measure the spring elongation, building a table of weight vs elongation,

we must be careful when hanging the weights so as not to create oscillations in the spring

we look for the mass of each weight

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          m = W / g

and we write them in a new column, we make a graph of the weight or applied force against the elongation and it should give a straight line; the slope of this line is sought, which is the spring constant.

The fact of obtaining a line already proves Hooke's law.

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3 years ago
Sandstone is a sedimentary rock. Which two processes cause sand particles to form sandstone?
yuradex [85]

Answer:

Compaction and cementation

Explanation:

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Compaction: As the density of sedimentary rocks on edge of them are forced together through sediments.

6 0
3 years ago
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