Question

1. A force of 300 Newton , while acting on an area A , produces a pressure of 1500 Pascal . what is the magnitude of A in cm² ?
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2. what magnitude of force is required , in Newton , to produce a pressure of 27500 Pascal on an area of 200 cm²?
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3. Siddhi wants to deposit silver on an iron spoon . she took the silver nitrate ( AgNO3 ) solution in a beaker and set up a simple circuit of electroplating . which terminal of battery should the spoon be connected to ? what material should the other electrode be made of ? ..... explain your answer by drawing a labelled sketch of experimental setup used for this purpose.

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Answer 1

Answer:

$❶ \: \bf\red{ Question}$

1. A force of 300 Newton , while acting on an area A , produces a pressure of 1500 Pascal . what is the magnitude of A in cm² ?

$\star\:\bf\pink{Solution}$

$\begin{gathered}\bf\gray{Given}\begin{cases}\sf\red{Force\:(300N)}\\\sf\green{Pressure\:(1500Pa)}\\\sf\purple{Area \:(?cm ^{2} )}\end{cases}\end{gathered}$

Now as we know $\bf Pressure = \dfrac{Force}{Area}$

so, $\tt Area = \dfrac{Force}{Pressure}$

→ $\tt Area = \dfrac{300}{1500}$

→ $\tt Area = \dfrac{\cancel{300}}{\cancel{1500}} \: = \dfrac{1}{5} {m}^{2}$

Now 1 m = 100 cm

so, 100 × 100/5

→ 2000 cm²

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$❷ \: \bf\red{ Question}$

2. what magnitude of force is required , in Newton , to produce a pressure of 27500 Pascal on an area of 200 cm²?

$\star\:\bf\pink{Solution}$

$\begin{gathered}\bf\gray{Given}\begin{cases}\sf\blue{Pressure\:(27500Pa)}\\\sf\purple{Area\:(200cm ^{2})}\\\sf\orange{force \:( ?N)}\end{cases}\end{gathered}$

Now as we know $\bf Pressure = \dfrac{Force}{Area}$

so, $\tt Force = Pressure × Area$

[ Area = 200 cm² → 0.02 m²]

→ Force = 27500 × 0.02

→ Force = 550 N

__________________________________________

$❸ \: \bf\red{ Question}$

3. Siddhi wants to deposit silver on an iron spoon . she took the silver nitrate ( AgNO3 ) solution in a beaker and set up a simple circuit of electroplating . which terminal of battery should the spoon be connected to ? what material should the other electrode be made of ? ..... explain your answer by drawing a labelled sketch of experimental setup used for this purpose.

$\star\:\bf\pink{Solution}$

➢ Silver is attached to positive terminal of the battery (Anode).

➢ Spoon is attached to negative terminal of the battery (Cathode).

➢ Salt of Silver i.e. AgNO3 in aqueous medium is used as an electrolyte

➢ When electric current is passed through it:-

❶ Silver Nitrate breaks up into silver ions and nitrate ions.

AgNO3 → Ag+ + NO3-

❷ Silver ions (Ag+) attracted towards cathode (steel spoon). They get deposited on it as silvery - white metal.

❸ Silver ions that are used up, are replaced in the solution from the silver anode.

† In this way, we can get a coating of desired metal on any object.

[ Note - Diagram is in the attachment ]

Answer 2

Answer:

Question:

1. A force of 300 Newton , while acting on an area A , produces a pressure of 1500 Pascal . what is the magnitude of A in cm² ?

☆Solution:

According to your question it's given that,

→300N

→Pressure (1500Pa)

→Area(cm²)

Now as we know pressure→

$= \frac{force}{area}$

So area→

$= \frac{force}{area}$

Area→

$= \frac{300}{1500}$

Area→

$\cancel \frac{300}{1500} = \frac{1}{5} {m}^{2}$

Now,1m=100cm

So,100×100/5

➜2000 cm²

_____________________________________

Question:

2. what magnitude of force is required , in Newton , to produce a pressure of 27500 Pascal on an area of 200 cm².

☆Solution

According to your question it is given:

→Pressure=(27500Pa)

→Area(200cm²)

→Force(?N)

Now as we know pressure→

$\frac{force}{area}$

So,force=Pressure×area

[Area=200cm²→0.02m²]

→Force=27500×0.02

→Force=550N

Question:

3. Siddhi wants to deposit silver on an iron spoon . she took the silver nitrate ( AgNO3 ) solution in a beaker and set up a simple circuit of electroplating . which terminal of battery should the spoon be connected to ? what material should the other electrode be made of ? ..... explain your answer by drawing a labelled sketch of experimental setup used for this purpose.

☆Solution:

➢ Silver is attached to positive terminal of the battery (Anode).

➢ Spoon is attached to negative terminal of the battery (Cathode).

➢ Salt of Silver i.e. AgNO3 in aqueous medium is used as an electrolyte

➢ When electric current is passed through it:-

❶ Silver Nitrate breaks up into silver ions and nitrate ions.

AgNO3 → Ag+ + NO3-

❷ Silver ions (Ag+) attracted towards cathode (steel spoon). They get deposited on it as silvery - white metal.

❸ Silver ions that are used up, are replaced in the solution from the silver anode.

† In this way, we can get a coating of desired metal on any object.

Hope it helps!

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