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Answered on 25 Jul Tuition/Class IX-X Tuition

Noori Perween

a market is a place wherein buyers and sellers are in such a free intercourse with one another that prices are determined.now the market structure is defined as prevalence of different market based on competition,product and number of the firms.
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Answered on 24 Jul Tuition/Class IX-X Tuition

Kanika

Tutor

Is it 4 days a week or 5 days?
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Answered on 25 May Tuition Tuition/Class XI-XII Tuition (PUC) Tuition/Class IX-X Tuition

Sreenath

Tutor

Having a classical base not just increases your knowledge and abilities to understand but helps you to do different genres. Light music is a very big term which has a lot of genres. Before you learn light music you are first made to learn basics of classical music, where voice culture is taught as well,... read more

Having a classical base not just increases your knowledge and abilities to understand but helps you to do different genres. Light music is a very big term which has a lot of genres. Before you learn light music you are first made to learn basics of classical music, where voice culture is taught as well, not just gives a great voice and stability but helps you in modulation many imps for light music.

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Answered on 01/10/2017 Tuition/Class IX-X Tuition

Vijaya Kumar Jayanthi

Tutor

Can't define as Tan 90=1/0 which can't defined.
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Lesson Posted on 18/06/2017 Tuition/Class VI-VIII Tuition Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Science +1 Tuition/Class VI-VIII Tuition/Science less

Numerical problems on force and pressure

Soumi Roy

I am an experienced, qualified tutor with over 5 years of experience in teaching maths and physics 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 06/06/2017 Tuition/Class IX-X Tuition

Winning Edge Academy.

Cos360= Cos(360+0)=Cos0=1
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Answered on 01/05/2017 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics

Ishaan Srivastava

Tutor

Every Prime number has exactly two factors, 1 and itself, and not divisible by any other number, Using the same logic, 0 is divisible 3 , 4 , 5 , 6 and so on, Such as ( 0 x 3 = 0 , 0 x 4 = 0 .......). Hence it has more than 2 factor and is not a Prime Number.
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Answered on 30 Jan Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics

Sujoy D.

Tutor

I prefer S.Chand for science & for 10th board question practice I advise you to continue with NCERT books. For Maths R.D. Sharma is the best alternative as it contains lots of variety of question with answers & having an additional knowledge as well so I advise you to go understand the concern... read more

I prefer S.Chand for science & for 10th board question practice I advise you to continue with NCERT books. For Maths R.D. Sharma is the best alternative as it contains lots of variety of question with answers & having an additional knowledge as well so I advise you to go understand the concern the syllabus from NCERT book before start doing practice from R.D. Sharma. For Social Science, Hindi, English, NCERT books are more than sufficient. For English you may also consult "Golden English Communicative" it contains both Class 10 syllabus in details with Sample Papers. Last but not the least NCERT is must so please don't ignore it, About 70% - 80% question come from NCERT only so please go through it.

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Answered on 23 Jul Tuition/Class IX-X Tuition

Md

If a body is pivoted at a point and the force is applied on the body at a suitable point, it rotates the body about the axis passing through the pivoted point. This is the turning effect of the force and the motion of body is called the Rotational motion. read more

If a body is pivoted at a point and the force is applied on the body at a suitable point, it rotates the body about the axis passing through the pivoted point. This is the turning effect of the force and the motion of body is called the Rotational motion.

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Answered on 01/10/2016 Tuition/Class IX-X Tuition

Kavitha S.

Electronics subject tutor

When white light falls on sea, longest wavelength light (i.e., red, orange and yellow) are absorbed by water and remaining short wavelength light blue gets reflected. That's why sea and as well sky looks blue in colour
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