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Matter In Our Surroundings
What conclusions do you draw about the motion of a body from the following displacement-time graphs:
(a) From A to B, the body is at rest.
(b) From O to A, the body is moving with a uniform velocity (positive).
(c) From A to B, the body is moving with a uniform negative velocity.
(d) From O to A, the body has positive variable velocity.
(e) From O to A, the body has uniform positive velocity, from A to B the body has zero velocity and from B to C, the body has uniform negative velocity.
(f) From O to A, the body has variable positive velocity and from A to B, the body has variable negative velocity.
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Convert the following temperature to Celsius scale.
300K
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
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