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# grade11

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Why bridges are declared unsafe after a long use?
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Why bridges are declared unsafe after a long use?

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If a pendulum clock is taken to a mountain top, does it gain or lose time?
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If a pendulum clock is taken to a mountain top, does it gain or lose time?

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During pregnancy, woman often develop back pains from leaning backward while walking. Why do they have to walk this way?
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During pregnancy, woman often develop back pains from leaning backward while walking. Why do they have to walk this way?

#physicsquestions #grade11
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Why a wrench of longer arm is preferred in comparison to a wrench of short arm?
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Why a wrench of longer arm is preferred in comparison to a wrench of short arm?

#physicsquestions #grade11
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A man carrying a bucket of water on his hand always leans to the opposite side. Explain.
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A man carrying a bucket of water on his hand always leans to the opposite side. Explain.

#physicsquestions #grade11
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A dancer girl is rotating over a turntable with her arms outstretched. If she lowers her arms how does this affect her motion?
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A dancer girl is rotating over a turntable with her arms outstretched. If she lowers her arms how does this affect her motion?

#physicsquestions #grade11
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Explain which one is more elastic- rubber or steel.
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Explain which one is more elastic- rubber or steel.

#physicsquestions #grade11
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Explain why a man carrying a load on his back leans forward?
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Explain why a man carrying a load on his back leans forward?

#physicsquestions #grade11
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Explain why spokes are fitted in the cycle wheel.
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Explain why spokes are fitted in the cycle wheel.

#physicsquestions #grade11
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The weight of a body is less inside the earth than on the surface. Explain.
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The weight of a body is less inside the earth than on the surface. Explain.

#physicsquestions #grade11
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If the sun somehow collapsed to form a black hole, what effect would this event have on the orbit of the earth?
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If the sun somehow collapsed to form a black hole, what effect would this event have on the orbit of the earth?

#physicsquestions #grade11
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Is it possible for a solid body to have no matter at it centre of gravity?
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Is it possible for a solid body to have no matter at it centre of gravity?

#physicsquestions #grade11
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Explain why the moon has no atmosphere?
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Explain why the moon has no atmosphere?

#physicsquestions #grade11
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How does ‘g’ at a point vary with distance from the centre of the earth? Where is the highest value of ‘g’? Explain.
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How does ‘g’ at a point vary with distance from the centre of the earth? Where is the highest value of ‘g’? Explain.

#physicsquestions #grade11
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What will happen to the value of ‘g’ if the earth stops rotating?
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What will happen to the value of ‘g’ if the earth stops rotating?

#physicsquestions #grade11
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