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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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A fan with blades takes longer time to come to rest than without the blades. Why?
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A fan with blades takes longer time to come to rest than without the blades. Why?

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Why is a horse more stable than a man?
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Why is a horse more stable than a man?

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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.

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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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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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On what factors does the time period of a simple pendulum depend?
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On what factors does the time period of a simple pendulum depend?

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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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If the earth is struck by meteorites, the earth will slow down slightly. Why?
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If the earth is struck by meteorites, the earth will slow down slightly. Why?

#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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Why an astronaut in a space capsule orbiting the earth experiences a feeling of weightlessness?
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Why an astronaut in a space capsule orbiting the earth experiences a feeling of weightlessness?

#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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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?

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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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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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1 min read
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