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Thermal expansion
A clinical thermometer has small temperature range. The glass will crack/burst due to excessive pressure created by expansion of mercury.
A clinical thermometer has small temperature range. The glass will crack/burst due to excessive pressure created by expansion of mercury.
See lessFLOATING AND SINKING
From the concept of floating, archimede's idea, any object displaces its own weight in the fluid in which it floats, so the reason is simple in that; a good portion of the interior of the boat is air (unlike a cube of steel, which is solid throughout). The average density of a boat ( the combinationRead more
From the concept of floating, archimede’s idea, any object displaces its own weight in the fluid in which it floats, so the reason is simple in that; a good portion of the interior of the boat is air (unlike a cube of steel, which is solid throughout). The average density of a boat ( the combination of the steel and the air ) is very light compared to the average density of water while average density of solid steel is greater than average density of water. So very little of the boat actually has to submerge into the water before it has displaced the weight of the boat. Thus the boat floats while a solid steel sinks.
See lessREFLECTION AT CURVED SURFACES
1.image is upright 2.image is virtual 3.lateral inversion. (most important )
1.image is upright
2.image is virtual
3.lateral inversion. (most important )
See lessAtmospheric pressure
Thank you, exact response I was aiming at.
Thank you, exact response I was aiming at.
See lessMagnetic effect of electric current
The commutator on the DC generator converts the AC into pulsating DC. ... On DC motor the purpose of the commutator is to insure that the current flowing through the rotor windings is always in the same direction, and the proper coil on the rotor is energized in respect to the field coils.
The commutator on the DC generator converts the AC into pulsating DC. … On DC motor the purpose of the commutator is to insure that the current flowing through the rotor windings is always in the same direction, and the proper coil on the rotor is energized in respect to the field coils.
See lessMagnetism and electrical
Repulsion is the only sure method since it test L's the polarity of magnets, I.e like poles repels unlike poles attracts but attraction can between unlike poles or between poles of a magnet and a magnetic material
Repulsion is the only sure method since it test L’s the polarity of magnets, I.e like poles repels unlike poles attracts but attraction can between unlike poles or between poles of a magnet and a magnetic material
See lessThermodynamics
For uniform/even distribution of heat at the bottom of the beaker
For uniform/even distribution of heat at the bottom of the beaker
See less