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Question 57: (a) Define density. What is the SI unit of densit

Physics

Class 9

Lakhmir Singh

Chapter 1: Motion

117 questions

Chapter 2: Force and Laws of Motion

114 questions

Chapter 3: Gravitation

157 questions

Question 56: (a) State the principle of flotation.
(b) A floating boat displaces water weighing 6000 newtons.
(i) What is the buoyant force on the boat?
(ii) What is the weight of the boat?

Question 57: (a) Define density. What is the SI unit of density?
(b) Define relative density. What is the SI unit of relative density?
(c) The density of turpentine is 840 kg/m^{3. What will be its relative density? (Density of water = 1000 kg/m³⁾}

Question 58: (a) Define pressure.
(b) What is the relation between pressure, force and area?
(c) Calculate the pressure when a force of 200 N is exerted on an area of :
(i) 10 m^{2

(ii) 5 m²}

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Chapter 4: Work and Energy

128 questions

Chapter 5: Sound

162 questions

Question

Question 57: (a) Define density. What is the SI unit of density?
(b) Define relative density. What is the SI unit of relative density?
(c) The density of turpentine is 840 kg/m^{3. What will be its relative density? (Density of water = 1000 kg/m³⁾}

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Text solutionVerified

Answer: (a) Density is defined as the mass per unit volume of a substance. The symbol for density is ρ. Mathematically, density is defined as

ρ = \frac{m}{V}

The SI unit of density is kg/m^{3.

(b) Relative density of a substance is the ratio of density of the substance to the density of water. Relative density has no unit.

(c)
$Relative density = \frac{Density of turpentine}{Density of water} = \frac{840 kg / m ^{3}}{1 , 000 kg / m ^{3}} = 0.84$

Ans: Relative density of turpentine = 0.84.}

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Practice more questions from Physics (Lakhmir Singh)

Question 56: (a) State the principle of flotation.
(b) A floating boat displaces water weighing 6000 newtons.
(i) What is the buoyant force on the boat?
(ii) What is the weight of the boat?

Question 58: (a) Define pressure.
(b) What is the relation between pressure, force and area?
(c) Calculate the pressure when a force of 200 N is exerted on an area of :
(i) 10 m^{2

(ii) 5 m²}

View all

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Question Text	Question 57: (a) Define density. What is the SI unit of density? (b) Define relative density. What is the SI unit of relative density? (c) The density of turpentine is 840 kg/m^{3. What will be its relative density? (Density of water = 1000 kg/m³⁾}
Topic	Gravitation
Subject	Science
Class	Class 9
Answer Type	Text solution:1
Upvotes	24

Question 57: (a) Define density. What is the SI unit of density?
(b) Define relative density. What is the SI unit of relative density?
(c) The density of turpentine is 840 kg/m^{3. What will be its relative density? (Density of water = 1000 kg/m³⁾}

Text solutionVerified

Practice more questions from Physics (Lakhmir Singh)

Practice questions from Physics (Lakhmir Singh)

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Question 57: (a) Define density. What is the SI unit of density? (b) Define relative density. What is the SI unit of relative density? (c) The density of turpentine is 840 kg/m3. What will be its relative density? (Density of water = 1000 kg/m3)

Text solutionVerified

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Practice questions from Physics (Lakhmir Singh)

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Practice questions on similar concepts asked by Filo students

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Question 57: (a) Define density. What is the SI unit of density?
(b) Define relative density. What is the SI unit of relative density?
(c) The density of turpentine is 840 kg/m^{3. What will be its relative density? (Density of water = 1000 kg/m³⁾}