A) A vessel at STP contains 28.5 kg of N2 (molecular mass=28u). What is the mean free path of the N2 molecules in the vessel? An N2 molecule has a diameter of 3x10-10 m.

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A: Given : Which is more tiring running or walking in the stairs ?

Q: Give an example word problem about Law of Conservation of energy

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A: Given data;  machine effort of 10 kgfit is used this effirt to lift the load is;    load=100 kgfFind…

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Q: If speed of wind is increased by 3 times, Power of wind

A: Given: Speed of wind increases by 3 times.   The power of the wind.

Q: How many Ergs are there in 1 Joule? a) 10 b) 104 c) 107 d) 109

A: To find: How many Ergs are there in 1 Joule

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Q: means the repair work done to keep the system in good working condition.

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Q: Why is a hydro turbine more efficient than a hydro pump?

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A: Advantages of wooden roller coaster over steel

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Q: Which of the following is not a unit of power? O J/s O N'm O horsepower Watts

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Q: Calculate the work done by a force of 41 Newtons that moves a box through a displacement of 26…

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Q: Name some physical quantities that are universally conserved.

A: The four physical quantities that are universally conserved are

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Q: Unit of work?

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Q: True or false "Cars are less efficient in cold weather"

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Q: Is the weight of a system an extensive or intensive property?

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Q: Importance of energy density in daily lives

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