Answer:
The First law of motion
Explanation:
The firat law states that an object either remains at rest or continues to move at a constant velocety unless acted upon by an external force
The circuit is a parallel circuit.
Because even one light bulb is broken, the others are still lit. Therefore it is not a series circuit
Answer:
54 kg
Explanation:
Mass of person = 93 kg = 
Mass of water = 62 kg = 
Dividing the above two masses we get

Hence, the mass of the person is 1.5 times the mass of the water in them
Now, Mass of person = 81 kg = 

So, the mass of water in a person that has mass of 81 kg is 54 kg