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Matter In Our Surroundings

Question
CBSEENSC9006349
Wired Faculty App

Calculate the kinetic energy of a ball of mass 10 g and momentum 100 g cm.

Solution

Mass space of space ball comma space straight m space equals space 10 space straight g Momentum comma space straight p space equals space 100 space straight g space cm divided by straight s Using space the space formula comma space space space space space space space space space straight p space equals space mv Therefore comma space Velocity comma space space straight v space equals space straight p over straight m space space space space space space space space space space space space space space space space space space space space space space equals space 100 over 10 cm divided by straight s space space space space space space space space space space space space space space space space space space space space space space space equals space 10 space cm divided by straight s space space space space space space space space space space space space space space space space space space space space space space space equals space 1 over 10 straight m divided by straight s So comma space space space space straight K. straight E. space equals space 1 half mv squared space equals space 1 half cross times 10 over 1000 cross times open parentheses 1 over 10 close parentheses squared straight J space space space space space space space space space space space space equals space 5 space cross times space 10 to the power of negative 5 end exponent straight J space

Some More Questions From Matter In Our Surroundings Chapter

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.

Give two reasons to justify
An iron almirah is a solid at room temperature.

Why is ice at 273K more effective in cooling than water at the same temperature ?

What produces more severe burns, boiling water or steam ?

8. Name A, B, C, D, E and F in the following diagram showing state change :

Both boiling and evaporation convert a liquid into vapour. What is the difference between the two process

Define Evaporation

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