Check the cover on the catalytic converter or it could be the throw out bearing
No, marble is typically neutral and does not carry a positive charge on its own.
A pH-neutral cleaner specifically designed for marble surfaces is the best choice for cleaning marble surfaces effectively and safely.
Gravity Gravity Density of the marble stone being greater than water causes it to sink by gravitational force.
The force of gravity
The force of gravity is what causes the marble to sink to the bottom of the glass of water. Gravity pulls the marble downward towards the center of the Earth, overcoming the buoyant force exerted by the water.
pH is measured only in solutions or liquids. Marble chips has not a pH.
Friction and air resistance.
Air pollution
acid rain
A marble is more dense and has less surface area, so it is not affected by air resistance as much as the feather.
Marble that was once sedimentary rock is called metamorphic marble. It forms when limestone, a sedimentary rock, undergoes metamorphism due to high pressure and heat, which causes its minerals to recrystallize into marble.
The Taj Mahal in India is suffering from marble cancer which causes the white marble turn into yellowish.