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Answers
hey mate,
5.1) speed-Speed is how fast an object is moving. It is calculated by the displacement of space per a unit of time
velocity- Velocity is the rate at which an object changes position in a certain direction. It is calculated by the displacement of space per a unit of time in a certain direction.
2) The law of conservation of energy is a law of science that states that energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another.
example-water is stored at height with potential energy, the water flows and its potential energy is converted into kinetic energy.
7)A fuse wire is a safety wire connected in series with the live wire, in case of any large current supply or malfunctioning in the electric connections it melts and breaks the electric circuit.
It protects the circuit and the electric appliances by stopping the flow of excess of electric current.
8)Oxides of metals which have both acidic as well as basic behavior are known as amphoteric oxides
example-aluminium oxide and zinc oxide
11)An earthing system is the circuitry which connects parts of the electric circuit with the ground.
It keeps people safe by preventing electric shocks. It prevents damage to electrical appliances and devices by preventing excessive current from running through the circuit.
12)voltmeter-
- it measure potential difference
- always connected in series
- high resistance
ammeter-
- it measure electric current
- always connected in series
- low resistance
hope this much answers will help u:-)