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Ronith

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  1. Asked: November 22, 2020In: Class 8 Science

    When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to

    Ronith
    Added an answer on November 22, 2020 at 5:18 am

    The rise of water in the dropper is due to (d) atmospheric pressure. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

    The rise of water in the dropper is due to (d) atmospheric pressure.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

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  2. Asked: November 22, 2020In: Class 8 Science

    A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad.

    Ronith
    Added an answer on November 22, 2020 at 5:17 am

    Two forces acting on the rocket immediately after leaving the launching pad are: • Frictional force due to air. • Force of gravity pulling in downward direction. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

    Two forces acting on the rocket immediately after leaving the launching pad are:
    • Frictional force due to air.
    • Force of gravity pulling in downward direction.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

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  3. Asked: November 22, 2020In: Class 8 Science

    Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discuss why the forces acting on the bucket do not bring a change in its state of motion.

    Ronith
    Added an answer on November 22, 2020 at 5:16 am

    The force acting on a plastic bucket are: • Gravitational force: It is acting downwards. • Muscular force: It is applied by our hands to lift the bucket in upward direction. Although these forces are acting on the bucket but no change is found in its state of motion because the two forces are balancRead more

    The force acting on a plastic bucket are:
    • Gravitational force: It is acting downwards.
    • Muscular force: It is applied by our hands to lift the bucket in upward direction.
    Although these forces are acting on the bucket but no change is found in its state of motion because the two forces are balancing each other and as a result net force is zero.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

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  4. Asked: November 22, 2020In: Class 8 Science

    An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall?

    Ronith
    Added an answer on November 22, 2020 at 5:15 am

    The force which is responsible for the attraction between the ball and the wall is electrostatic force. When we rub the balloon by a synthetic cloth, it gets charged. When it is taken near the wall, it will get attracted towards the uncharged wall because of the electrostatic force which is the forcRead more

    The force which is responsible for the attraction between the ball and the wall is electrostatic force.
    When we rub the balloon by a synthetic cloth, it gets charged. When it is taken near the wall, it will get attracted towards the uncharged wall because of the electrostatic force which is the force exerted by a charged body on another uncharged body.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

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  5. Asked: November 22, 2020In: Class 8 Science

    A blacksmith hammers a hot piece of iron while making a tool. How does the force due to hammering affect the piece of iron?

    Ronith
    Added an answer on November 22, 2020 at 5:15 am

    The force due to hammering change the shape of the piece of iron. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

    The force due to hammering change the shape of the piece of iron.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

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  6. Asked: November 22, 2020In: Class 8 Science

    While the arrow moves towards its target, the forces acting on it are due to _________ and that due to _________ of air.

    Ronith
    Added an answer on November 22, 2020 at 5:14 am

    While the arrow moves towards its target, the forces acting on it are due to gravity and that due to friction of air. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

    While the arrow moves towards its target, the forces acting on it are due to gravity and that due to friction of air.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

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  7. Asked: November 22, 2020In: Class 8 Science

    The type of force responsible for a change in the state of motion of the arrow is an example of a _________ force.

    Ronith
    Added an answer on November 22, 2020 at 5:14 am

    The type of force responsible for a change in the state of motion of the arrow is an example of a muscular force. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

    The type of force responsible for a change in the state of motion of the arrow is an example of a muscular force.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

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  8. Asked: November 22, 2020In: Class 8 Science

    The force applied by the archer to stretch the bow is an example of _________ force.

    Ronith
    Added an answer on November 22, 2020 at 5:13 am

    The force applied by the archer to stretch the bow is an example of contact force. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

    The force applied by the archer to stretch the bow is an example of contact force.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

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  9. Asked: November 22, 2020In: Class 8 Science

    To stretch the bow, the archer applies a force that causes a change in its _________.

    Ronith
    Added an answer on November 22, 2020 at 5:12 am

    To stretch the bow, the archer applies a force that causes a change in its shape. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

    To stretch the bow, the archer applies a force that causes a change in its shape.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

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  10. Asked: November 22, 2020In: Class 8 Science

    The north pole of a magnet __________ the north pole of another magnet.

    Ronith
    Added an answer on November 22, 2020 at 5:11 am

    The north pole of a magnet repels the north pole of another magnet. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

    The north pole of a magnet repels the north pole of another magnet.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-11/

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