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Matter In Our Surroundings
A body is thrown up vertically upwards. Its velocity goes on decreasing. What happens to its kinetic energy as its velocity becomes zero?
When a body is thrown upwards, its kinetic energy gradually changes into potential energy. At the highest point where its velocity becomes zero, whole of the kinetic energy gets converted into potential energy.
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Convert the following temperature to Celsius scale.
573 K
Convert the following temperatures to Kelvin scale
25°C
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
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