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LAKHMIR SINGH & MANJIT KAUR-FORCE AND PRESSURE.-EXERCISE
- Explain why, wooden (or concrete ) sleeps are kept below the railway l...
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- Explain why a wide steel belt is provided over the wheels of an army t...
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- Explain why ,the tip of a sewing neddis is sharp.
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- Explain why,snow shoes stop you from sinking into snow.
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- Explain why, when a person stands on a cushion, the depression is much...
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- Explain why, porters place a thick round piece of cloth on their heads...
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- Give one practical application of magnetic force.
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- What is meant by a contact force ? Explain with the help of an example...
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- What is meant by a non - contact force ? Explain with the help of an e...
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- Define frictional force ( or friction) .
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- Explain why, frictional force is said to be a contact force.
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- Explain why magnetic force is said to be a non - contact force.
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- Define pressure. What is the relation between pressure , force and are...
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- Explain why, school bags are provided with wide straps to carry them.
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- What is meant by atmospheric pressure? What is the cause of atmospheri...
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- Why are our bodies not crushed by the large pressure exerted by the at...
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- Explain why , atmospheric pressure decreases as we go higher up above ...
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- How does the pressure of a liquid depend on its depth ? Draw a lebelle...
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- Explain why, the walls of a dam are thicker near the bottom than at th...
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- Which of the following is not an example of muscular force ?
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