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24問 • 2年前
  • Jeon Jungkook
    • 通報

    問題一覧

  • 1

    Which term refers to the condition of an object when the vector sum of all the forces acting on it is zero?

    equilibrium

  • 2

    Which of the following conditions does not put an object in a state of equilibrium?

    The sum of all the forces acting on the object is equal to zero.

  • 3

    How does the Big Bang Theory describe the universe?

    The universe started from a singularity and is continuously expanding.

  • 4

    Which of the following pieces of evidence supports the Big Bang Theory?

    all of the above

  • 5

    Which of the following statements correctly describes Hubble's Law?

    Galaxies recede at speeds proportional to their distances from the observer.

  • 6

    According to the Big Bang Theory, what was the condition of the universe before the Big Bang?

    absolute zero temperature with infinite volume

  • 7

    What is the current prediction on the future of the universe?

    the universe will continue to expand indefinitely

  • 8

    It states that a body at rest will stay at rest and a body moving at a constant velocity will continue moving at a constant velocity unless there is/are unbalanced force/s acting on the object.

    law of inertia

  • 9

    For an object to be in a state of equilibrium, what must be the total net force of the object and its system?

    0

  • 10

    Forces which lines of action are parallel to each other are called

    parallel force

  • 11

    According to Big Bang Theory, the universe began as a singularity.

    True

  • 12

    Some scientists states that the universe will never come to halt.

    False

  • 13

    Elliptical galaxies were proposed to be formed from the collision of many smaller galaxies.

    True

  • 14

    A moving ball at a constant velocity do not illustrate the law of inertia.

    False

  • 15

    A parked car is an example of an object that is in a state of equilibrium

    True

  • 16

    Human activities are governed by elements of force, motion, and energy.

    True

  • 17

    The discovery of cosmological redshift and cosmic microwave background does not provide a strong evidence that the universe is expanding.

    False

  • 18

    Earth is the only known planet that can support life.

    True

  • 19

    If the net force is zero, the object will only remain at rest.

    True

  • 20

    A free body diagram represents a body and the forces acting on it.

    True

  • 21

    Is an application of the first law of motion and further explains static translational equilibrium.

    First condition of equilibrium

  • 22

    Which states that for a body to achieve a state of equilibrium, the sum of all the torques about the axis of rotation mjst be equal to zero.

    Second condition of equilibrium

  • 23

    The ______ of an object may be described in terms of its likelihood to return to a state of equilibrium after a small displacement

    Stability

  • 24

    The equilibrium of rigid bodies can be described as stable or unstable. These categories of stability are analyzed in terms of the _________, which is the point where the weight of the body is concentrated.

    Center of gravity

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    問題一覧

  • 1

    Which term refers to the condition of an object when the vector sum of all the forces acting on it is zero?

    equilibrium

  • 2

    Which of the following conditions does not put an object in a state of equilibrium?

    The sum of all the forces acting on the object is equal to zero.

  • 3

    How does the Big Bang Theory describe the universe?

    The universe started from a singularity and is continuously expanding.

  • 4

    Which of the following pieces of evidence supports the Big Bang Theory?

    all of the above

  • 5

    Which of the following statements correctly describes Hubble's Law?

    Galaxies recede at speeds proportional to their distances from the observer.

  • 6

    According to the Big Bang Theory, what was the condition of the universe before the Big Bang?

    absolute zero temperature with infinite volume

  • 7

    What is the current prediction on the future of the universe?

    the universe will continue to expand indefinitely

  • 8

    It states that a body at rest will stay at rest and a body moving at a constant velocity will continue moving at a constant velocity unless there is/are unbalanced force/s acting on the object.

    law of inertia

  • 9

    For an object to be in a state of equilibrium, what must be the total net force of the object and its system?

    0

  • 10

    Forces which lines of action are parallel to each other are called

    parallel force

  • 11

    According to Big Bang Theory, the universe began as a singularity.

    True

  • 12

    Some scientists states that the universe will never come to halt.

    False

  • 13

    Elliptical galaxies were proposed to be formed from the collision of many smaller galaxies.

    True

  • 14

    A moving ball at a constant velocity do not illustrate the law of inertia.

    False

  • 15

    A parked car is an example of an object that is in a state of equilibrium

    True

  • 16

    Human activities are governed by elements of force, motion, and energy.

    True

  • 17

    The discovery of cosmological redshift and cosmic microwave background does not provide a strong evidence that the universe is expanding.

    False

  • 18

    Earth is the only known planet that can support life.

    True

  • 19

    If the net force is zero, the object will only remain at rest.

    True

  • 20

    A free body diagram represents a body and the forces acting on it.

    True

  • 21

    Is an application of the first law of motion and further explains static translational equilibrium.

    First condition of equilibrium

  • 22

    Which states that for a body to achieve a state of equilibrium, the sum of all the torques about the axis of rotation mjst be equal to zero.

    Second condition of equilibrium

  • 23

    The ______ of an object may be described in terms of its likelihood to return to a state of equilibrium after a small displacement

    Stability

  • 24

    The equilibrium of rigid bodies can be described as stable or unstable. These categories of stability are analyzed in terms of the _________, which is the point where the weight of the body is concentrated.

    Center of gravity