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Answered on 20 Aug Tuition Tuition/Class 6 Tuition Tuition/Class 7 Tuition

Abdul Basit

Final MBBS student and can help high school students in biology

The conventional method of teaching, i.e. Chalk and talk (whiteboard) remains the best for a primary school teacher. But using some exciting animations may also be helpful.
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Answered on 05 Jul Tuition

Shijo Francis

Tutor

It depends upon your understanding and way you adopted. You can listen to youtube classes. Generally, it will take months.
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Answered on 04 Sep Tuition

V K Mittal

For your requirements as per question asked by you, you should join the graduate course as per your choice and exciting field for work experience. As per your query, there are various areas in which you can work as well as study at graduate level viz hospitality, tourism and travel, hospital management,... read more

For your requirements as per question asked by you, you should join the graduate course as per your choice and exciting field for work experience. As per your query, there are various areas in which you can work as well as study at graduate level viz hospitality, tourism and travel, hospital management, library management, supply chain management, office management. So you can choose one of them, study for three years, and in the fourth year,  you may appear for CAT EXAM  as a target for a career with full zeal and dedicative efforts.

You can get success in a time Bound framework.

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Lesson Posted 1 day ago CBSE/Class 12/Science/Physics/Unit 8-Atoms & Nuclei/ATOMS Tuition CBSE

Written Discussion on Physics Chapter : Atoms and Nuclei

Surbhi

Certified teacher. I have been teaching students since 5 years. The students i have taught have scored...

This Demo lesson includes the introduction to one of the highest weightage chapters of Physics inboards ATOMS Starting from Rutherford's nuclear model of an atom to the alpha particle trajectory, physics observes it's conclusions from points to derivations ( mentioning the derivation of the two forces... read more

This Demo lesson includes the introduction to one of the highest weightage chapters of Physics inboards

ATOMS

  • Starting from Rutherford's nuclear model of an atom to the alpha particle trajectory, physics observes it's conclusions from points to derivations ( mentioning the derivation of the two forces in a hydrogen atom here) to atomic spectra. There have been various experiments mentioned in this chapter that is about to be discussed. 
  1. First, Thomson's model concluded that an atom is a spherical cloud of positive charges with electrons embedded in it. But since the information wasn't enough, Rutherford came with his nuclear model of an atom. In it,  most of the mass of the atom and all its positive charge is concentrated in a tiny nucleus (typically one by ten thousand the size of an atom), and the electrons revolve around it.
  2. Drawbacks of Rutherford's model : 
    • It predicts that atoms are unstable because the accelerated electrons revolving around the nucleus must spiral into the nucleus. This contradicts the stability of matter.
    • It cannot explain the characteristic line spectra of atoms of different elements.

 3. Atomic Spectrum :

    • Lyman series 
    • Balmer series
    • Paschen series
    • Brackett series
    • Pfund series
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Lesson Posted 2 days ago Tuition

Difference Between Resistance and Resistivity

Ratan Kudache

I am an engineer and I have 2 years of teaching experience. I handle classes from 1 to 10th for state,...

Here I am going to discuss resistance and resistivity. Resistivity: Resistivity is nothing but a specific natural resistance of a material. Typical means for a particular material i.e if we compare copper and diamond the resistance of copper is less than that of diamond i.e it very from material to... read more

Here I am going to discuss resistance and resistivity.

Resistivity: Resistivity is nothing but a specific natural resistance of a material. Typical means for a particular material i.e if we compare copper and diamond the resistance of copper is less than that of diamond i.e it very from material to material, therefore, it is called specific resistance.

Resistance: It is nothing but opposition to the flow, i.e. it will obstruct the flow, but it is a cobination of opposition offered in a flow the word combination means the resistance of a material plus the resistance of other devices to which that material is connected. For example when you connect the wire to a battery then it will have a natural resistance(loss) of wire as well as there will be some resistane(loss) in a battery that is called resistance.

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Lesson Posted 2 days ago Tuition

Brief Introduction About Cast Iron

Ratan Kudache

I am an engineer and I have 2 years of teaching experience. I handle classes from 1 to 10th for state,...

CAST IRON: Cast iron has iron and carbon as there main constituent. Carbon content in cast iron varies from 2.1% to 6,67%, but for practical application purpose, the percentage of carbon in cast iron is limited to 4.2%. This is because as the percentage of carbon in a cast iron increases beyond 4.2%... read more

CAST IRON: Cast iron has iron and carbon as there main constituent. Carbon content in cast iron varies from 2.1% to 6,67%, but for practical application purpose, the percentage of carbon in cast iron is limited to 4.2%. This is because as the percentage of carbon in a cast iron increases beyond 4.2% then its brittleness and melting point increases. Cast iron has high compressive strength than tensile strength. The cast iron is widely used in casting because of its low melting point. Due to the low melting point, the cost of melting material reduces which in turn reduces the cost of casting that is why the percentage of carbon in cast iron is limited to 4.2% for many applications as I mentioned above. One more important property of cast iron is good flowability, and due to that, accurate shapes can be produced in casting.

PROPERTIES OF CAST IRON

1) High strength and corrosion resistance

2) high brittleness

3) low machineability

4) high hardness

5) high castability

there are four types of cast iron which are categorized based on heat treatment and percentage of carbon

1) grey cast iron

2) nodular cast iron

3) white cast iron 

4) malleable cast iron

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Asked 4 days ago Tuition/BTech Tuition/Computer science

After learning Python, what I have to study to become a data scientist? Do I have to study deep learning,... read more

After learning Python, what I have to study to become a data scientist?

Do I have to study deep learning, then machine learning, and the data science or what?

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Answered on 20/04/2018 Tuition/Class VI-VIII Tuition

Himani B.

Tutor

400 rupees per subject
Answers 1370 Comments 39
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Lesson Posted on 18/06/2017 CBSE/Class 10/Science Tuition/Class VI-VIII Tuition Tuition/Class IX-X Tuition +1 Tuition/Class VI-VIII Tuition/Science less

Numerical problems on force and pressure

Soumi Roy

I am an experienced, qualified tutor with over 8 years of experience in teaching maths and Science across...

Example 1: A force of 1200 N acts on the surface of area 10 cm2 normally. What would be the thrust and pressure on the surface?Given: Force F = 1200 N, Area A = 10 cm2 = 10 ×10-4 m2 = 10-3 m2Thrust = Normal pressure = F = 1200 NPressure P = F/A 1200N10−3m21200N10−3m2 ... read more

Example 1:

A force of 1200 N acts on the surface of area 10 cm2 normally. What would be the thrust and pressure on the surface?

Given:


Force F = 1200 N, Area A = 10 cm2 = 10 ×10-4 m2 = 10-3 m2

Thrust = Normal pressure = F = 1200 N

Pressure P = F/A 1200N103m21200N10−3m2
              
                      = 1.2 ×× 106 N/m2

Example 2:

The elephant weighs 20,000 N stands on one foot of area 1000 cm2. How much pressure would it exert on the ground?

Given:


Force applied by elephant F = 20,000 N, area A = 1000 cm2 = 1000/100×100m2 = 0.1 m2

The pressure is given by

Pressure P = F/A

      = 20,000N/0.1m2


        = 2,00,000 N/m2.

Example 3:

Calculate the pressure produced by a force of 800 N acting on an area of 2.0 m2.

Solution:

Pressure is defined as force per unit area or P = F / A
P = (800 N) / (2.0 m2
)
P = 400 N / m2
= 400 Pa

Example 4:

The pressure of a gas contained in a cylinder with a movable piston is 300 Pa. The area of the piston is 0.5 m2. Calculate the force that is exerted on the piston.

Solution

Pressure is defined as force per unit area or P = F / A
We multiply both sides of the equation by the area to solve for the force as
F = P A
F = (300 Pa) (0.5 m2
)
F = 150 (Pa) m2
= 150 (N / m2
) m2
F = 150 N

Example 5:

A swimming pool of width 9.0 m and length 24.0 m is filled with water to a depth of 3.0 m. Calculate pressure on the bottom of the pool due to the water.

Solution:

The pressure due to a column of fluid is calculated as the product of the height of the fluid times
the density of the fluid times the acceleration due to gravity. For water the density is d = 1000 kg /
m3
.
? P = d h g
? P = (1000 kg / m3
) (3.0 m) (9.8 m / s2
)
? P = 29400 kg m2 / m3
s2
To simplify the units we cancel one m term in the m2
term in the numerator and one m term in
the m3
term in the denominator to get
? P = 29400 kg m / s2
m2

We know that 1N = 1 kg m / s2
so we can write
? P = 29400 N / m2
= 29400 Pa

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Answered on 13/08/2015 Tuition/Class IX-X Tuition

Roop Narayan

Tutor

Better go through NCERT books.
Answers 29 Comments
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