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3 years ago

Which action can be explained by physics ?

Physics

2 answers:

LiRa [457]3 years ago

8 0

The pressure of blood exerted on the inner walls of the veins

Elis [28]3 years ago

3 0

Answer:

Option (d)

Explanation:

The pressure of blood exerted on the inner walls of the veins.

Pressure is defined a the force acting on the surface per unit area.

$Pressure = \frac{Force}{Area}$

The SI unit of pressure is Newton per square metre.

More be the force more be the pressure.

As due to the deposition of cholesterol on the walls of veins, the area of cross section of walls decreases which results the increase in pressure . It is very harmful for the heart, it may cause heart failure as heart do extra work to pump the blood.

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What would happen if there were no enzymes in the human body?

MakcuM [25]

Answer:

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3 years ago

Read 2 more answers

1. In an atom, an electron and a proton are separated by a distance of 1 x 10-8m. a) Find the force on the electron. b) Assuming

aleksandrvk [35]

Answer:

(a) 2.3 x 10^-12 N

(b) 1.6 x 10^5 m/s

Explanation:

q1 = 1.6 x 10^-19 C

q2 = 1.6 x 10^-19 C

r = 1 x 10^-8 m

(a) the electrostatic force is given by

F = K q1 x q2 / r^2

F = ( 9 x 10^9 x 1.6 x 10^-19 x 1.6 x 10^-19) / (1 x 10-^-8)^2

F = 2.3 x 10^-12 N

The force is attractive in nature because the nature of charge on electron and proton s opposite to each other.

(b) The electrostatic force is balanced by the centripetal force actig on the electron.

F = mv^2 / r

where, r be the radius of orbit and v be the velocity of electron in the orbit.

2.3 x 10^-12 = (9.1 x 10^-31 x v^2) / (1 x 10^-8)

v = 1.6 x 10^5 m/s

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3 years ago

If you help me answer these questions you will get 23 points!

sashaice [31]

1) kg
2) cylinder
3)Micro metre
4) millimeters
5)metres
6)
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8)0.5
9)5000
10)1500
11)10
12)20grams
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3 years ago

Show diagrammatically how forc of 7N and 9N can be combined to give a resulntant force

adell [148]

So picture below to see answer and explanation.

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3 years ago

Compared to the charge of proton,the charge of an electron has A) The greater magnitude and opposite sign B) The same magnitude

Lyrx [107]

Answer:

C. I'm pretty sure because I just took that test but I'm not sure

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3 years ago