Calculate the power of a pump which can lift 100 kg of water to store it in a water tank at a height of 19 m in 25 sec. (Take the value of g = 10 m/s²).

Solution

Mass of water which can be lifted by pump, m = 100 kg

Height of the water tank, h = 19 m

Time taken to fill the tank, t = 25 s

Acceleration due to gravity, g = 10 m/s²Therefore, using the formula,

Power is given by,

P =

\frac{Work done}{time taken} = \frac{m g h}{t} = \frac{100 \times 10 \times 19}{25} = 760 W a t t

Some More Questions From Matter In Our Surroundings Chapter

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Matter In Our Surroundings

Calculate the power of a pump which can lift 100 kg of water to store it in a water tank at a height of 19 m in 25 sec. (Take the value of g = 10 m/s²).

Some More Questions From Matter In Our Surroundings Chapter

Give reason for the following observations.

Naphthalene balls disappear with time without leaving any solid.

Give reason for the following observations.

We can get the smell of perfume sitting several metres away.

What is the physical state of water at

a) 25°C
b)0⁰C
c)100⁰C

What is the physical state of water at
0°C

What is the physical state of water at
100°C

Give two reasons to justify
Water at room temperature is a liquid.

Give two reasons to justify
An iron almirah is a solid at room temperature.

Why is ice at 273K more effective in cooling than water at the same temperature ?

What produces more severe burns, boiling water or steam ?

8. Name A, B, C, D, E and F in the following diagram showing state change :

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For Daily Free Study Material Join wiredfaculty

Matter In Our Surroundings

Calculate the power of a pump which can lift 100 kg of water to store it in a water tank at a height of 19 m in 25 sec. (Take the value of g = 10 m/s2).

Some More Questions From Matter In Our Surroundings Chapter

Give reason for the following observations.Naphthalene balls disappear with time without leaving any solid.

Give reason for the following observations.We can get the smell of perfume sitting several metres away.

What is the physical state of water ata) 25°C b)00Cc)1000C

What is the physical state of water at0°C

What is the physical state of water at100°C

Give two reasons to justifyWater at room temperature is a liquid.

Give two reasons to justifyAn iron almirah is a solid at room temperature.

Why is ice at 273K more effective in cooling than water at the same temperature ?

What produces more severe burns, boiling water or steam ?

8. Name A, B, C, D, E and F in the following diagram showing state change :

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Calculate the power of a pump which can lift 100 kg of water to store it in a water tank at a height of 19 m in 25 sec. (Take the value of g = 10 m/s²).

Give reason for the following observations.

Naphthalene balls disappear with time without leaving any solid.

Give reason for the following observations.

We can get the smell of perfume sitting several metres away.

What is the physical state of water at

a) 25°C
b)0⁰C
c)100⁰C

What is the physical state of water at
0°C

What is the physical state of water at
100°C

Give two reasons to justify
Water at room temperature is a liquid.

Give two reasons to justify
An iron almirah is a solid at room temperature.