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3 years ago

200 what factors do Pressure depend?1 What is athematical expression do you u

Physics

1 answer:

Varvara68 [4.7K]3 years ago

6 0

Answer:

pressure of solid depends on:

1/magnitude of the force

2/contact area

pressure in solid depends on:

1/depth inside the fluid.

2/density of the fluid.

3/Acceleration due to gravity.

Explanation:

1/magnitude of the force:the pressure is directly proportional to the magnitude of the force(thrust). The larger the force, the higher is the magnitude of pressure on the surface.

2/Contact area: the pressure is inversely proportional to the surface area of contact. The larger the contact area, lower is the magnitude of the pressure.

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Suppose that the resistance between the walls of a biological cell is 4.2 × 109 Ω. (a) What is the current when the potential di

Lady_Fox [76]

Answer:

(a) Current will be $17.857\times 10^{-12}A$

(b) Number of ions will be $8.258\times 10^6$

Explanation:

We have given that resistance of the biological cell $R=4.2\times 10^9ohm$

(a) We have given potential difference of 75 mV

So $V=75\times 10^{-3}volt$

From ohm's law we know that current is given by

$i=\frac{V}{R}=\frac{75\times 10^{-3}}{4.2\times 10^9}=17.857\times 10^{-12}A$

(b) We have given time t = 0.74 sec

We have to find the charge

We know that charge is given by Q = it, here i is current and t is time

So charge will be $Q=17.857\times 10^{-12}\times 0.74=13.214\times 10^{-12}C$

So number of ions will be $n=\frac{13.214\times 10^{-12}}{1.6\times 10^{-19}}=8.258\times 10^6$

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4 years ago

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jeka57 [31]

Answer:

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Explanation:

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3 years ago

Which of the following accurately describes the way in which a muscle moves?

Vaselesa [24]

<h3>Answer;</h3>

B. When actin filaments are pulled toward the center of the sarcomere, the fiber shortens.

<h3>Explanation;</h3>

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Contraction of striated muscle fibers takes place as the sacromeres shorten as myosin heads pull on the actin filaments.
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3 years ago

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Travka [436]

Answer:

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Explanation:

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3 years ago

A man, facing a high wall, notices that an echo is heard 4.0 seconds after he makes a sharp sound. After walking 200m directly t

cestrela7 [59]

Answer:2.4

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3 years ago

200 what factors do Pressure depend?1 What is athematical expression do you u​

200 what factors do Pressure depend?1 What is athematical expression do you u