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Parthiv Patel 5 years, 2 months ago
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Posted by Aamir Ali 5 years, 2 months ago
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Aditi. Bains 5 years, 2 months ago
Yogita Ingle 5 years, 2 months ago
The units which can neither be derived from other units nor they can be further resolved into simpler units are called fundamental units. Examples: Mass, length etc.
Those units which can be expressed in terms of the fundamental units are called derived units. Example: speed, velocity, acceleration etc.
Posted by Ajay Chaudhary 5 years, 2 months ago
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Aniket Yadav 5 years, 2 months ago
Yogita Ingle 5 years, 2 months ago
|
Name |
Relative Strength |
Range |
Operates among |
|
Gravitational force |
10–39 |
Infinite |
All objects in the universe |
|
Electromagnetic force |
10–2 |
Infinite |
Charged particles |
Posted by Vasudha Yadav 5 years, 2 months ago
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Posted by Boparai Boparai 5 years, 2 months ago
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Aditi. Bains 5 years, 2 months ago
Yogita Ingle 5 years, 2 months ago
Light year is the unit of distance and it is the distance covered by the light in time of one year. So the given statement is false.
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Yogita Ingle 5 years, 2 months ago
The dimensional formula for capacitance is {tex}M^{-1} L^{-2} T^{4} I^2.{/tex}
Capacitance can be defined as the ratio of the change in an electric charge to the corresponding change in its electric potential in a system.
Posted by ?Ritesh Gupta☺️ 5 years, 2 months ago
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Posted by Mayank Vekariya 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
The dimensional formula of gravitational constant is given by,
M-1 L3 T-2
Where,
- M = Mass
- L = Length
- T = Time
Derivation
From Newton’s law of gravitation,
Force (F) = [GmM] × r-2
Gravitational Constant (G) = F × r2 × [Mm]-1 . . . . (1)
Since, Force (F) = Mass × Acceleration = M × [LT-2]
∴ The dimensional formula of force = M1 L1 T-2 . . . . (2)
On substituting equation (2) in equation (1) we get,
Gravitational Constant (G) = F × r2 × [Mm]-1
Or, G = [M1 L1 T-2] × [L]2 × [M]-2 = [M-1 L3 T-2].
Therefore, the gravitational constant is dimensionally represented as M-1 L3 T-2.
Posted by Saksham Kaushik 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
The dimensional formula of coefficient of friction is given by,
[M0 L0 T0]
Where,
- M = Mass
- L = Length
- T = Time
Derivation
Coefficient of friction (μ) = Frictional Force × [Normal Force]-1 . . . . (1)
Since, Force (F) = Mass × acceleration = Mass × velocity × [Time]-1
And, velocity = Displacement × [Time]-1
∴ The dimensions of Force = [M] × [LT-1] × [T]-1 = [M1 L1 T-2] . . . . (2)
On substituting equation (2) in equation (1) we get,
Coefficient of friction (μ) = Frictional Force × [Normal Force]-1
Or, μ = [M1 L1 T-2] × [M1 L1 T-2]-1 = [M0 L0 T0].
Therefore, the coefficient of friction is dimensionally represented as [M0 L0 T0].
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Himanshu Kumar 5 years, 2 months ago
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Gautami Patil 5 years, 2 months ago
Posted by Akash Singh 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
Kinetic Theory and Gas Pressure
The pressure of a gas is the result of continuous bombardment of the gas molecules against the walls of the container. According to the kinetic theory, the pressure P exerted by an ideal gas is given by
• Boyle’s Law
According to this law, the volume (V) of a fixed mass of a gas is inversely proportional to the pressure (P) of the gas, provided temperature of the gas is kept constant.
• Charle’s Law
According to this law, the volume (V) of a given mass of a gas is directly proportional to the
temperature of the gas, provided pressure of the gas remains constant.
• Gay Lussac’s Law (or Pressure Law)
According to this law, the pressure P of a given mass of a gas is directly proportional to its absolute temperature T, provided the volume V of the gas remains constant.
Posted by Muskan Kumari Upadhyay 5 years, 2 months ago
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Posted by Rahul Byadagihal 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
Instantaneous velocity describes how fast an object is moving at different instants of time in a given time interval. It is also defined as average velocity for an infinitely small time interval.
Here lim is taking operation of taking limit with time tending towards 0 or infinitely small.
dx/dt is differential coefficient – Rate of change of position with respect to time at an instant.
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Akash Pandey 5 years, 2 months ago
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Deep Singer Vekariya 5 years, 2 months ago
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