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Heat transfer
In radiation particles are not used for transfer as in conduction. These particles hinder conduction due to their vibration.
In radiation particles are not used for transfer as in conduction. These particles hinder conduction due to their vibration.
See lessuniform circular motion
The body keeps changing direction, hence change in velocity since velocity is a vector quantity. This velocity change is acceleration.
The body keeps changing direction, hence change in velocity since velocity is a vector quantity. This velocity change is acceleration.
See lessGas Laws
I) The weight (mass) of the particles is negligible II) There are no intermolecular distances
I) The weight (mass) of the particles is negligible
See lessII) There are no intermolecular distances
Floating and Sinking of submarines
Submarines are fitted with air(floatation) tanks which can be filled with water or air. When the tanks are filled with air the submarine becomes lighter(less dense) hence floats and when they are filled with water the sub becomes heavier hence sinks.
Submarines are fitted with air(floatation) tanks which can be filled with water or air. When the tanks are filled with air the submarine becomes lighter(less dense) hence floats and when they are filled with water the sub becomes heavier hence sinks.
See lessConcrete and steel
Concrete and steel have very close linear expansivity. They therefore expand and contract at the same rate. This prevents cracking and hence destruction of concrete structures due to non-uniform expansion.
Concrete and steel have very close linear expansivity. They therefore expand and contract at the same rate. This prevents cracking and hence destruction of concrete structures due to non-uniform expansion.
See lessCharged Particle
The particle produces a magnetic field which will exert a force on other particles close to it .
The particle produces a magnetic field which will exert a force on other particles close to it .
See lessElectronics
Zener breakdown occurs as a result of electric field (potential difference) leading to the rapture of covalent bonds to release electrons. While Avalanche breakdown results from collision of free electrons with atoms leading to ionisation of the atoms.
Zener breakdown occurs as a result of electric field (potential difference) leading to the rapture of covalent bonds to release electrons. While Avalanche breakdown results from collision of free electrons with atoms leading to ionisation of the atoms.
See lessWork Done on Horizontal Plane
Work is the product of force and distance meved in the direction of force. In this case the force acts perpendicular to the distance covered. The product is therefore zero hence no work done.
Work is the product of force and distance meved in the direction of force. In this case the force acts perpendicular to the distance covered. The product is therefore zero hence no work done.
See lessCONTROL GRID
When the potential difference is increased more electrons reach the screen making the spot brighter. When the p.d is decreased fewer electrons reach the screen making the spot less bright.
When the potential difference is increased more electrons reach the screen making the spot brighter. When the p.d is decreased fewer electrons reach the screen making the spot less bright.
See less