An object of mass 5 kg is lifted vertically to a height of 2.0 m above the ground. If the acceleration due to gravity at the place is 10 m/s2, what is the amount of work done?
Mass of the object, m = 5 kg
The object is lifted vertically to a height, h = 2 m
Force applied is equal to the weight of object = mg = 5 x 10 = 50 N
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
What is the physical state of water at
100°C
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