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Ask QuestionPosted by Sujeetkumar Dubey 5 years, 11 months ago
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Posted by Abhinav Tiwari 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
Newton’s Law of Cooling states that the rate of heat lost by a body is directly proportional to the difference in temperature between the body and its surroundings.
The law is applicable to small temperature differences. Even when the transfer of heat is due to a combined effect of conduction, convection and radiation, the rate of cooling is proportional to the difference in temperature.
Posted by Abhinav Tiwari 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
Bernoulli’s Principle
- For a streamline fluid flow, the sum of the pressure (P), the kinetic energy per unit volume (ρv2/2) and the potential energy per unit volume (ρgh) remain constant.
- Mathematically:- P+ ρv2/2 + ρgh = constant
- where P= pressure ,
- E./ Volume=1/2mv2/V = 1/2v2(m/V) = 1/2ρv2
- E./Volume = mgh/V = (m/V)gh = ρgh
Posted by Amit Tanwar 5 years, 11 months ago
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Rahul Rajput 5 years, 11 months ago
Sahdev Attri 5 years, 11 months ago
Farhat Shaikh Shaikh 5 years, 11 months ago
Priya Rahad 5 years, 11 months ago
Posted by Abha J 5 years, 11 months ago
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Posted by Sanjay Suthar 5 years, 11 months ago
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Mahesh Prabhala 5 years, 11 months ago
Posted by Amrit Kaur 5 years, 11 months ago
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Tripti Maurya 5 years, 11 months ago
Posted by Nidhi Premi 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
Work is said to be done when a force applied to an object moves that object.
We can calculate work by multiplying the force by the movement of the object.
W = F × d
The SI unit of work is the joule (J)
Posted by Ali Azgar 5 years, 11 months ago
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Posted by Aditya Aadi 4 years, 6 months ago
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Sia ? 4 years, 6 months ago
| Elastic Collision | Inelastic Collision |
| The total kinetic energy is conserved. | The total kinetic energy of the bodies at the beginning and the end of the collision is different. |
| Momentum does not change. | Momentum changes. |
| No conversion of energy takes place. | Kinetic energy is changed into other energy such as sound or heat energy. |
| Highly unlikely in the real world as there is almost always a change in energy. | This is the normal form of collision in the real world. |
| An example of this can be swinging balls or a spacecraft flying near a planet but not getting affected by its gravity in the end. | An example of an inelastic collision can be the collision of two cars. |
Posted by Aditya Aadi 5 years, 11 months ago
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Sanjay Suthar 5 years, 11 months ago
Posted by Rahul Harnote 5 years, 11 months ago
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Posted by Mandeep Dhillon 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
Gravitational force < weak nuclear force < electromagnetic or motive force < strong nuclear force.
- Gravitational Force – Weakest force; but infinite range.
- Weak Nuclear Force – Next weakest; but short range.
- Electromagnetic Force – Stronger, with infinite range.
- Strong Nuclear Force – Strongest; but short range.
Posted by Shivam Keshri 5 years, 11 months ago
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Posted by Nisha Yadav 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
Following are the friction types which depend on the types of motion:
- Static Friction: the frictional force that acts between the surfaces when they are at rest with respect to each other.
- Sliding Friction: the resistance that is created between any two objects when they are sliding against each other.
- Rolling Friction: the force which resists the motion of a ball or wheel and is the weakest types of friction.
- Fluid Friction: the friction that exsits between the layers of the fluid when they are moving relative to each other.
Posted by Karan Sandhu 5 years, 11 months ago
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Sanjay Suthar 5 years, 11 months ago
Gaurav Bagga 5 years, 11 months ago
Posted by Pranjal Aggarwal 5 years, 11 months ago
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Posted by Md Fardeen 5 years, 11 months ago
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Posted by Nisha Yadav 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
Dimensional formula of Force F [M1 L1 T-2]
So a =1, b=1, c=-2
Now because Newton is in m.k.s system,We Have.
M1 = 1kg, L1 = 1m, T1 = 1s
M2 = 1g, L2 = 1cm, T2 = 1s
n1= 1 Newton
n2 = ?
Using the formula
n2= n1[M1/M2]a [L1/L2]b [T1/T2]c
n2= 1 [1kg/1g]1 [1m/1cm]1 [1s/1s]-2
n2= 1[1000g/1g]1 [100cm/1cm]1 x1
n2= 1000×100 = 100000
= 105 dyne
Posted by Muskan Mann 5 years, 11 months ago
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Sanjay Suthar 5 years, 11 months ago
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Esha Dutt 6 years ago
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Farhat Shaikh Shaikh 5 years, 11 months ago
1Thank You