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Scientific reasoning, because there is a basis/structure behind it i.e. general knowledge.
Electrodynamic theory.
Not on its own. Some explosive substance must be present. Friction generates heat and sometimes sparks. This can potentially ignite explosive materials.
what is the principle behind simple pendulum no because heavy body is suspended with light extensibe string.
The laws of momentum. The boat is on a frictionless surface (water). The engine turns the propeller, which forces water backwards at speed. Since there is nothing to stop the boat moving - it moves forwards.
it works on the principle of refraction
yema
Osmosis.
Scientific reasoning, because there is a basis/structure behind it i.e. general knowledge.
the principle behind working of a rocket is newtons 3rd law of motion which states that every action has equal and opposite reaction
The bead of borax with some powdered sample is heated in a flame; the color of the bead is specific for each element and is used as a qualitative analysis.
For contro solution
Electrodynamic theory.
It is a membrane full of gas.
No, the principle behind scissors is the "lever" and "shear".
to find out if the substance is acid or akaline
Very simple: evaporation of water.