Tensile stress formula

When a material is exposed to a pull or stretch, it is said to be under tensile stress. Tensile stress is a type of stress that occurs when a material under stress is elongated or stretched due to the applied force. It is calculated by dividing the applied force by cross sectional area of the material on which the force is applied. Since a material is said to be under stress when a force is applied on its cross sectional area and result is its stretching or pulling. Hence the tensile stress formula can be expressed as
Tensile stress=F/A
Here F=applied force
A=cross sectional area of the material on which the force is applied.
Here force is measured in Newton and the cross sectional area is measured in mm2, hence unit of tensile stress is N/mm2. Having problem with Define Unbalanced Force keep reading my upcoming posts, i will try to help you.

What is the definition of stress
Let’s assume that force is applied to an elastic body. The applied force will cause change in its shape and size. We say that the body is deformed. This is because the body or material is under stress. Stress can be defined as force applied on unit area of the material. Depending on the type of force, the elastic material will compress or elongate.

stress definition
Stress is the measurement of force applied on unit area of a material. It is measured in Pascal which is expressed in Newton per m2
stress equation
Since stress is measurement of force applied on cross sectional area of a material, its equation is expressed as following:
Stress=force/cross sectional area on which the force is applied. Here stress is symbolised by “sigma” s.
equation for stress
Equation for stress includes force and area of the material. It is expressed as
s=F/A
Here  s=stress
F=force
A=area of material under force.
Here we assume that force is applied equally all over the length of material. But practically we calculate the stress by measuring the force felt at the end of the length of material. Please express your views of this topic Elastic Potential Energy Formula by commenting on blog.

stress vs strain curve
As we know that a material under stress will be elongated or compressed, depending on the type of applied force. Suppose a material is subjected to tensile force. If we draw the force-extension graph for the material, it will show the behaviour of the material under force. Here we should remember that different materials will show different extension behaviour, even if they are exposed to same force. This is due to the fact that extensibility of a material depends on its shape, dimensions and many other factors. Hence the force-extension graph, that show the extension behaviour of material irrespective of their dimensions, are known as stress=strain curve.

Strain

The concept of strain and stress was given to describe the elastic materials that undergo dimension changes when exposed to a force. Here we define stress as strength of a material to withstand the force. On the other hand, strain is defined as change in dimension of a material which is subjected to a stress. Depending on the type of force, strain is categorised as tensile strain, compression strain and bulk strain. In case of tensile strain, the material is exposed to a tensile force. This force causes extension of the material by increasing its length. Compression force causes compression of the material.I like to share this Atomic Mass Number with you all through my article.

Equation for strain
Strain is defined as change in dimension of an elastic material due to stress. Hence strain equation is expressed as ratio of dimension of the material before and after force application. Since it is a ratio, it is a dimensionless quantity.

Strain equation
Strain is measured as change in length of the material caused by applied force or stress. It is calculated by using following equation:
e=??L/Lo
here e=strain
??L=change in length of the material after force application
And Lo= Original length of the material before force application.

What is a strain
As we know that most of the materials are made up of elastic particles that experience changes in their dimensions when an external force is applied. Suppose a force is applied on an elastic material, it will undergo change in its dimensions. Here we say that the material is under stress and is experiencing changes in its shape and size due to the applied force. Hence strain is defined as changes in length or dimensions of an elastic material caused by externally applied force.Understanding What is Radioactive Decay is always challenging for me but thanks to all math help websites to help me out.
strain definition
Strain is measurement of change in length of the elastic material caused by an externally applied force. Since it is a ratio of changed to original dimensions, it is a unit less quantity.
Strain stress equation
Let’s suppose that we have an elastic material. If we apply an external force on the material, it will show changes in its shape and size. Here the strength of the material to withstand the force is defined as stress. On the other hand, the changes in dimension of the material, brought about the force, are taken as strain.
Stress equation is given as following:
Stress=force/area
Strain=changed length/original length.

Sir Isaac Newton Gravity

It is a well known story that Sir Newton was sitting under apple tree. He saw the apple falling on the ground. He thought about few things. First, since apple was present on the tree at rest, there should be no applied force at that time. When apple falls on ground, there should be a force to accelerate it. What is that force? Here came the concept of gravity. I like to share this Potential Energy Equation with you all through my article.

What are Newton's 3 Laws of Motion
While studying about calculus and physics, Sir Isaac Newton came up with three laws of motion.
The first law of motion states that a resting object will remain in rest and a moving object will continue to move with constant velocity unless an unbalanced external force is applied to it. This is also known as law of inertia of object. It explains tendency of objects to resist change in their motion and to remain in state of inertia.
The second law of motion is about an object on which some external force is applied. Under these conditions, the change in acceleration or velocity of object is proportional to the amount to applied force and is indirectly proportional to its mass.
According to third law of motion, for each force, there is equal resulting force that operates in opposite direction. Please express your views of this topic Average Kinetic Energy by commenting on blog.

Isaac Newton Law of Gravity
According to Newton’s law of gravity, each object on earth attracts every other object with a force. This force is known as force of gravity. The force of gravity is proportional to product of their masses and inversely proportional to the squares of distance between them.

Laws of Motion Examples
The first law of motion can be understood by following example. Suppose a dish is lying on the floor. Here is no applied force on the dish. The only present force is force of friction. If we apply force on dish in the quantity to overcome the force of friction, the dish will start sliding on the floor. Now the change in velocity of the dish will be according to the amount of applied force.
The second law of motion can be explained by following example. Suppose a boy is asked to push two sacks, one weighing 10 kg and other 25 kg. The boy will need to apply more force on the heavier object to push it. This is in accordance to the second law of motion.
The third law can be explained by example of rocket launching. When a rocket is launched, rocket pushes the ground with a force. The opposite force pushes the rocket in upward direction.

Isaac Newton Laws of Gravity
Sir Newton came up with law of gravity that states that each object exerts force of gravity of other objects and gave laws of gravity.

Properties of Internal Energy

It means any potential and kinetic energy present into body or in any substance at a particular temperature it may be different but temp always same and it cannot be seen because it is a microscopic activity we cannot measure it at macroscopic level. According to first law of thermodynamics when any chemical reaction takes place in two substances at the time of mixture any vibration, motion and rotation creates activity and change the surrounding of chemical reaction defines Internal Energy Formula. Sometimes, we heat the substance and also that time vibration in substance cause of heat called internal energy. So the first Law of  thermodynamics says internal energy increase is always equals to heat plus work done by surrounding. Engy of any forms is different like energy at liquid form of substance same as energy of gas are also change, when conversion of gas into any other form or any change takes place after reaction and also changes take place in molecules and atoms so this creates combustion and this is called Internal Energy of a Gas.

Internal Energy of a System means isolation of something by physical or by imagination. System works according to surrounding environment, every material or gas changes it forms according to system, contact of anything to system called surrounding. Engy transferred from surrounding to environment with the help of system and this happen through the effective system. Chemical reaction of any substance ant their internal combustion, vibration and reaction with the help of system. Internal energy of moving body is also immeasurable because it cannot see its only depend on temperature of external environment and all release and consume energy effect the internal and external environment of body. Understanding Elastic Potential Energy Examples is always challenging for me but thanks to all math help websites to help me out.

Generally Development of body depends upon internal energy because all food for human body effects internal energy of human body and helps to create development because food gives energy and not only food any physical movement of anybody increase or decrease its energy. Change in Internal Energy of a System of all substance are different for example if one gram water at temperature of one degree Celsius and one gram copper same as one degree temp so in that case water have high potential energy than copper and copper have high internal energy than water so every liquid form of substance and solid form of substance have different energy with the different external temperature. So the internal energy of any substance or metal depends on it motion or on environment.

Define Convection, Conduction and Radiation

It is the process of moving of this energy from one place to other in different forms. Transfer of Heat is the process of releasing energy from the body in thermodynamic system. When temperature increases then energy releases from body and transfer to other system. There are 3 Types of Heat Transfer process which are conduction, convection and radiation. All methods have same thing happens for energy transfer from body but process is changes for all system. When temperature of body increases then molecules of particles will be vibrate, rotate and translate into other form. The amount of energy released from body due to temperature fluctuates in system. I like to share this Total Kinetic Energy with you all through my article.

When energy or it releases from fluid and transfer to solid then its conduction occurs. For example the contact of hand with container of hot water then energy transfer from container to body and this is called conduction. In conduction direct contact of energy from body. The temperature of both bodies is different and when they both are comes in contact of each other then at the time of contact they come in thermal equilibrium condition. In convection the energy releases from fluid only due to indirect contact of transfer of this energy. For example the water in vessel boiled at high temperature then its energy comes from fluid on the form of it and this indirect process is called convection.Please express your views of this topic First Law of Thermodynamics Example by commenting on blog.

When a water is placed on stove or burner then flames is direct comes from burner and this is called radiation. Heat Transfer Coefficient of Air is defines as boundary of both states gas and liquid has convection process. Water or air has direct contact of energy with boundary of other phases and it is called conduction process. Similarly, Heat Transfer Coefficient of Water is defines as when fluid is boil on burner then energy is released form liquid at high temperature or energy is transferred from one fluid to other liquid.

The Methods of Heat Transfer of convection has two processes that’s are forced or assisted convection and free or natural convection. Forced or Assisted convection has ht transfer by external forces occur on a body. For example fan, pump used for external forces for transfer of it. Natural or free convection has ht transfer process by using buoyancy forces on a body. It is natural process for transfer energy between fluid and surface. The density of fluid is greater than density of fluid near surface.

Sample Ratio Problems

Introduction for sample ratio problems:

In mathematics, a ratio expresses the magnitude of quantities relative to each other. Specifically, the ratio of two quantities indicates how many times the first quantity is contained in the second and may be expressed algebraically as their quotient. Example: For every Spoon of sugar, you need 2 spoons of flour (1:2) (Source: Wikipedia)

In our daily life, by learning ratio and proportion many a times we compare two quantities of the same type. Thus, in convinced situations, comparison by division makes better sense than comparison by taking the difference. The comparison by division is the Ratio. We denote ratio-using symbol ‘:’. If two ratios are equal, we state that they are in proportion and use the symbol ‘:’ or ‘=’ to equate the two ratios.

Sample Ratio Definition and Example Problems:

Definition of ratio:

The learning ratio is a comparison by division method. We compare the two quantities in terms of ‘how many times’. This comparison is known as the Ratio. We denote ratio-using symbol ‘:’

Examples of sample ratio problems:

Sample problem 1:

Length and breadth of a rectangular field are 75 m and 25 m respectively. Find the ratio of the length to the breadth of the field.

Solution:

Length of the rectangular field = 75 m

Breadth of the rectangular field = 25 m

The ratio of the length to the breadth is 75: 25

The ratio can be written as

= 75 / 25 = 3:1

Thus, the required ratio is 3:1

Sample problem 2:

There are 60 persons working in an office. If the number of females is 25 and the left over are males, find the ratio of,

(a) The number of females to number of males.

(b) The number of males to number of females.

Solution:

Number of females = 25

Total number of workers = 60

Number of males = 60 – 25 = 35

Therefore, the ratio of number of females to the number of males

= 35: 25 = 7: 5

And the ratio of number of males to the number of females

= 25: 35 = 5: 7.

(Notice that there is a difference between the two ratios 7: 5 and 5: 7).I have recently faced lot of problem while learning Electric Field Definition, But thank to online resources of math which helped me to learn myself easily on net.

Sample Practice Problem for Ratio:

Problem 1:

In a bag of red and green sweets, the ratio of red sweets to green sweets is 3:5. If the bag contains 150 green sweets, how many red sweets are there?

Answer: There are 90 red sweets.

Problem 2:

A fence post in Tina's garden is 6 feet tall.  When she measured the fence post’s shadow, she found that it was 12 feet long.  A tree in Tina’s yard had a shadow of 72 feet.  How tall is the tree?

Answer: 36 tall is the tree

Problem 3:

The ratio of Kate's stickers to Jenna's stickers is 7:5.  Kate has 21 stickers. How many stickers does Jenna have?

Answer: 15 Stickers

Problem 4:

Chef Pillsbury's secret recipe requires 8 eggs for every 4 cups of flour. How many eggs will he need if he uses 6 cups of flour?

Answer: 12 eggs

Problem 5:

The ratio of the length of a rectangle to its width is 5:6. Its length is 25 inches. What is its width?

Answer: 30 inches

Introduction to Physics in Daily life

Physics is  a science based on experimental, observative and quantitative measurement. It is the study of nature and the laws governing the nature and how energy and matter are related to each other.

Physics in Daily Life Examples

Physics forms an inevitable part of all branches of life. It has numerous applications in all fields of life. If we consider our daily life, whatever we do can be directly or indirectly connected to one or the other principle of Physics. Our walking, our eating. our talking all involves Physics. Physics is the backbone of many daily life example like electricity, computer, wrist watch, Car, refrigerator and so on.Understanding Definition of Gravitational Potential Energy is always challenging for me but thanks to all math help websites to help me out.

some of the very few  examples from our daily life which illustrates the principles of Physics are

i. We walk, walk fast, run, jog, jump into a bus etc. All these or any type of motion is associated with Newton's law of motion.

ii. When we talk, our vocal cords vibrate producing sound.

iii. When we eat food, the chemical energy of the food is being converted into mechanical energy which we use to do different types of work.

iv. The electricity is our house is a gift of Physics. Hydroelectric project is the method in which water is used to generate electricity.  The mechanical energy of the water is converted into electrical energy using dynamo.



Physics in Daily Life, Examples Continued

v. refrigerator works on the principles of thermodynamics

vi. Pressure cookers, washing machines, music system, computers all work on the principle of Physics.

vii. Automobiles, trains, aircraft all work on the concepts of Physics.

viii. While you are reading this article the working of your eye is similar to the working of a camera which again belongs to Physics.

ix. Mobile phones working on microwaves also uses Physics to connect people from different parts of the world.

x. Writing using Pen, writing on whiteboard using marker all are the sole properties of Physics.

xi. Rain, snowfall, lightening, thunder, wind, sea breeze etc all owe their existence to the laws of Physics

As mentioned in the beginning, the above list is endless. Any phenomenon of our daily life you consider, we an surely bring Physics in it.