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# 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.

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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?

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A rigid, lighter than air balloon filled with Helium cannot continue to rise indefinitely. Why?
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A rigid, lighter than air balloon filled with Helium cannot continue to rise indefinitely. Why?

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Suppose two forces act on rigid body and two forces have same magnitude but opposite direction. what conditions the body rotate?
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Suppose two forces act on rigid body and two forces have same magnitude but opposite direction. what conditions the body rotate?

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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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What is the counterpart of the mass and force in rotational motion?
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What is the counterpart of the mass and force in rotational motion?

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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.

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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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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?

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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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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?

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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?

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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.

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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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