Recent Post

Saturated and Unsaturated Vapour Pressure

Saturated and Unsaturated Vapour Pressure What is a saturated solution? If in a water sugar solution, the amount of dissolved sugar is equal to the maximum amount that a given amount of water can dissolve at a certain temperature, then that solution is called a saturated solution. What is an unsaturated solution? If in a water sugar solution, the amount of dissolved sugar is less than that amount that a given amount of water can dissolve at a certain temperature, then that solution is called a saturated solution. What is saturated vapour? At a certain temperature in an enclosed space, if the amount of vapour present is equal to the maximum vapour capacity of that space, then that vapour is called saturated vapour. What is unsaturated vapour? At a certain temperature in an enclosed space, if the amount of vapour present is less than the maximum vapour capacity of that space, then that vapour is called unsaturated vapour. What is vapour pressure? Vapour enclosed in a container behaves
Post a Comment

Force

Physics

Chapter - 3: Force

👉 All Chapter Contents ðŸ‘ˆ 

  • 3.1 Inertia of Concept of Force - Newton's First Law
  • 3.2 Nature of Fundamental Forces
  • 3.3 Balanced and Unbalanced Forces
  • 3.4 Momentum
  • 3.5 Collision
  • 3.6 Effect of Force on Motion: Newton's Second Law
  • 3.7 Gravitational Force
  • 3.8 Newton's Third Law
  • 3.9 Frictional Force

Question Bank

3.1 Inertia of Concept of Force - Newton's First Law

  • State Newton's first law.
  • Explain why we never observe that a body in motion keeps its perpetual motion forever?
  • What does inertia mean?
  • What is inertia of rest?
  • What is inertia of motion?
  • Mass is the measurement of inertia? Explain.
  • What is force?
  • What is contact force?
  • What is a non-contact force?
  • Explain that the concept of inertia is found from Newton's first law.
  • Which way does passenger lean when the moving bus suddenly breaks and why?

3.2 Nature of Fundamental Forces

  • What is fundamental force?
  • How many fundamental forces in nature and what are they?
  • What do you mean by gravity?
  • What do you mean by electromagnetic force?
  • What do you mean by weak nuclear force?
  • What do you mean by strong nuclear force?
  • Discuss the comparative intensity of the fundamental forces.

3.3 Balanced and Unbalanced Forces

  • What do you mean by balanced force?
  • What do you mean by unbalanced force?

3.4 Momentum

  • What is momentum?
  • Determine the unit and dimension of momentum.
  • What do you understand by momentum 200 kgm/s?
  • Write the law of conservation of momentum.

3.5 Collision

  • Write the law of conservation of momentum?
  • Prove the law of conservation of momentum.
  • Write the law of conservation of energy?
  • Show that before the collision and after the collision total momentum is equal.
  • Explain the necessity of force and motion in the case of safe journey.

3.6 Effect of Force on Motion: Newton's Second Law

  • Write the second law of Newton.
  • Prove that, F = ma.
  • Write the unit and dimension of force.

3.7 Gravitational Force

  • What is gravitational force?
  • What is the value of the gravitational constant 'G'?

3.8 Newton's Third Law

  • Write Newton's third law.
  • Explain Newton's third law.

3.9 Frictional Force

  • What is friction?
  • What is frictional force?
  • Explain the origin of friction.
  • How many types of friction and what are they?
  • What is static friction?
  • What is sliding friction?
  • What is rolling friction?
  • What is fluid friction?
  • Explain the effect of friction on the motion?
  • Why there is a groove on the surface of the car tire?
  • Explain how friction can be reduced?
  • Explain how friction can be increased?
  • Explain why friction is a necessary evil?

Secondary Physics

Mathematical Problems

  • What is the force to be applied to a mass of 50 kg to produce an acceleration of 4 ms-2? [Ans: 200 N]

  • A boy pushes a box of mass 20 kg with a force of 50 N. What will be the acceleration of the box? [Ans: 2.5 ms-2]

  • A force of 2000 N acts on a body of mass 20 kg for a time of 0.1 s. What is the change of momentum of the body? [Ans: 200 kgms-1]

  • A bullet of mass 10 g was shot from a gun with a velocity of 500 ms-1. If the mass of the gun is 2 kg, find the backward velocity of the gun. [Ans: 2.5 ms-1]
Topic :

Comments

Post a Comment

Popular Posts

Environmental Pollution

Environmental Pollution Human activities directly or indirectly affect the environment adversely. A stone crusher adds a lot of suspended particulate matter and noise into the atmosphere. Automobiles emit from their tailpipes oxides of nitrogen, sulfur dioxide, carbon dioxide, carbon monoxide, and a complex mixture of unburnt hydrocarbons and black soot which pollute the atmosphere. Domestic sewage and runoff from agricultural fields, laden with pesticides and fertilizers, pollute water bodies. Effluents from tanneries contain many harmful chemicals and emit foul smells. These are only a few examples that show how human activities pollute the environment. Pollution may be defined as the addition of undesirable material into the environment as a result of human activities. The agents which cause environmental pollution are called pollutants. A pollutant may be defined as a physical, chemical, or biological substance unintentionally released into the environment which is directly or indi
Read more

What is biological coin?

Image
What is a biological coin? ATP is called the energy coin of the cell because it can store energy and can supply that energy to the cell's demand. ATP (Adenosine triphosphate) is known as 'biological currency' or energy coin, where energy is stored and can be used whenever the cell demands it.  Energy is released from the photosynthesis process to generate foods through respiration. Usually, this energy is stored within ATP in the bond of the terminal phosphate group. When this bond is broken, energy is released, which can be used in different physiochemical reactions. The basic mechanism of production and utilization of energy in the body of a living organism is its bio-energy. This is not very different from the definition of energy given in physics. The energy we get from making and breaking chemical bonds in the molecules found in biological organisms is called by this name. Living organisms continuously collect energy from the environment, transform them one from on
Read more

What is Buoyancy?

What is called Buoyancy? The ability of a fluid to exert an upward force on an object that is immersed in it called buoyancy. The upward force that liquid or gaseous matter applies perpendicularly on an object partially or completely submerged in the liquid or gaseous matter is called buoyancy. or, Buoyancy is an upward force exerted by a fluid that opposes the weight of an immersed object You may like Do I need car insurance? What is car insurance? How could I get cheaper car insurance? What is auto insurance? Why Adulterant food is the barrier to sound health? What are the producers? What are food preservatives? What is food chain? What is tertiary consumer?
Read more

Saturated and Unsaturated Vapour Pressure

Saturated and Unsaturated Vapour Pressure What is a saturated solution? If in a water sugar solution, the amount of dissolved sugar is equal to the maximum amount that a given amount of water can dissolve at a certain temperature, then that solution is called a saturated solution. What is an unsaturated solution? If in a water sugar solution, the amount of dissolved sugar is less than that amount that a given amount of water can dissolve at a certain temperature, then that solution is called a saturated solution. What is saturated vapour? At a certain temperature in an enclosed space, if the amount of vapour present is equal to the maximum vapour capacity of that space, then that vapour is called saturated vapour. What is unsaturated vapour? At a certain temperature in an enclosed space, if the amount of vapour present is less than the maximum vapour capacity of that space, then that vapour is called unsaturated vapour. What is vapour pressure? Vapour enclosed in a container behaves
Read more

Environment of Life

  Biology Chapter - 13: Environment of Life 👉   All Chapter Contents   👈   13.1  Ecosystem 13.2  Ecosystem of a pond 13.3  Food Chain 13.4  Food Web 13.5  Biodiversity 13.6  Significance and method of conserving Environment Question Bank 13.1  Ecosystem 13.2  Ecosystem of a pond 13.3  Food Chain 13.4  Food Web 13.5  Biodiversity 13.6  Significance and method of conserving Environment Secondary Biology Chapter - 1 :  Lessons on Life Chapter - 2 :  Cells and Tissues of Organisms Chapter - 3 :  Cell Divison Chapter - 4 :  Bioenergetics Chapter - 5 :  Food, Nutrition and Digestion Chapter - 6 :  Transport in Organisms Chapter - 7 :  Exchange of Gases Chapter - 8 :  Excretory System Chapter - 9 :  Firmness and Locomotion Chapter - 10 :  Co-ordination Chapter - 11 :  Reproduction in Organism Chapter - 12 :  Heredity in Organisms and Evolution Chapter - 13 :  Environment of Life Chapter - 14 :  Biotechnology
Read more

What is prime number?

What is a prime number? A prime number is a natural number greater than 1 that is not a product of two smaller natural numbers. A prime number is a whole number greater than 1 whose only factors are 1 and itself. A factor is a whole number that can be divided evenly into another number. For example, 5 is a prime number because the only ways of writing it as a product, 1  ×  5 or 5  ×  1, involve 5 itself. The first few prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. Numbers that have more than two factors are called composite numbers. The number 1 is neither prime nor composite. A natural number greater than 1 that is not prime is called a composite number. For example, 4 is a composite because it is a product (2 x 2) in which both numbers are smaller than 4. The property of being prime is called primality. There are infinitely many primes, as demonstrated by Euclid around 300 BC. No known simple formula separates prime numbers from composite numbers. However, the distrib
Read more

Periodic Table

  Chemistry Chapter - 4: Periodic Table 👉   All Chapter Contents   👈   4.1 Background of Periodic Table 4.2 Characteristics of the Periodic Table 4.3 Determination of the Position of Elements in the Periodic Table from Their Electronic Configuration 4.4 Electronic Configurations of Elements are the Main Basis of the Periodic Table 4.5 Some Exceptions in the Periodic Table 4.6 Periodic Properties of Elements 4.7 The Special Names of Elements Present in Various Groups 4.8 Advantages of the Periodic Table 4.9 Reactions Occurring in the Elements of the Same Group Question Bank 4.1 Background of Periodic Table * 4.2 Characteristics of the Periodic Table * 4.3 Determination of the Position of Elements in the Periodic Table from Their Electronic Configuration  * 4.4 Electronic Configurations of Elements are the Main Basis of the Periodic Table * 4.5 Some Exceptions in the Periodic Table * 4.6 Periodic Properties of Elements * 4.7 The Special Names of Elements Present in Various Group * 4.8
Read more

Contributions of Jagadish Chandra Bose

Image
Contributions of Jagadish Chandra Bose Acharya Sir Jagadish Chandra Bose was a renowned physicist, as well as a successful biologist. He was the first internationally recognized scientist of this subcontinent. The forefathers of Jagadishchandra Bose lived at the village of Rarikhal of Bikrampur in Dhaka district. He was born in 1858 in Mymensingh. His father, Bhagaban Chandra Bose, was a deputy magistrate of the Faridpur district. Acharya Sir Jagadish Chandra Bose His education started in a rural school in Faridpur. Later he completed his studies at Hare School and Saint Xavier School and College in Kolkata. After passing his B.A. in 1880, he went to England, and from 1880 - 1884 he completed his honors with BA in Physics from Cambridge University and then acquired a B.Sc. degree from London University. Returning to his motherland in 1885, he became a professor of physics in Presidency College. At that time was not enough scopes for research in that colleges, but he continued his res
Read more