Monoammonium phosphate effectively smothers the fire, while sodium bicarbonate induces a chemical reaction which extinguishes the fire. Fire extinguishers with a Class C rating are suitable for fires in “live” electrical equipment.
Answer:
cold water strengthens the magnetic attractive force.
Explanation:
The molecules within the magnet will move slower because they have less kinetic energy,so there is less vibration within the magnets molecules.
Iron rich minerals in rock pointed in one direction the switch to the exact opposite direction. I'd say that what supports this idea is that Earth's magnetic field goes through pole reversals.<span>
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Answer:
2.42hours
Explanation:
To calculate the time taken to boil the cup of water, we will use the formula
Q = It where
Q is the total energy required to boil the water = 100KJ = 100,000Joules
I is the current = 11.5A
t is the time taken to boil the water
t = Q/I
t = 100,000/11.5
t = 8695.65seconds
t = 2.42hours
