A body moves towards east by a distance of 3 km and turns towards north and moves a distance of 4 km. What is the magnitude of displacement of the body?
Given,
Distance travelled in east direction = 3 km
Towards north = 4 km
The magnitude of the displacement would be the resultant BC.
Therefore, using Pythagoras theorem,
That is, 5 km is the magnitude of displacement.
What is the physical state of water at
100 °C
For any substance, why does the temperature remain constant during the change of state ?
Suggest a method to liquify atmospheric gases.
Convert the following temperatures to Kelvin scale.
35°C
Give reason for the following observations.
Naphthalene balls disappear with time without leaving any solid.
Give reason for the following observations.
We can get the smell of perfume sitting several metres away.
What is the physical state of water at
a) 25°C
b)00C
c)1000C
What is the physical state of water at
0°C
What is the physical state of water at
100°C
Give two reasons to justify
Water at room temperature is a liquid.
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