Turning Effect of Force Examples Quiz
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Questions and Answers

What is the fourth state of matter?

  • Liquid
  • Gas
  • Solid
  • Plasma (correct)
  • Which physical quantity is defined as the product of an object's mass and velocity?

  • Momentum (correct)
  • Energy
  • Force
  • Acceleration
  • What is the efficiency of a machine that requires 500 J of input energy but can only deliver 400 J of useful output energy?

  • 75%
  • 80% (correct)
  • 60%
  • 85%
  • Which property of matter describes its resistance to flow?

    <p>Viscosity</p> Signup and view all the answers

    Which equation represents the relationship between work, force, and distance in physics?

    <p>$W = F*d$</p> Signup and view all the answers

    In the context of gravitation, what happens to the gravitational force between two masses if their separation distance is doubled?

    <p>It decreases to one-fourth</p> Signup and view all the answers

    What is the momentum of the bus when a net force of 1000 N is applied for 10 seconds?

    <p>10000 kg m/s</p> Signup and view all the answers

    Why do machines cannot give 100% efficiency in their surroundings?

    <p>Frictional forces consume some of the energy provided</p> Signup and view all the answers

    Which of the following is NOT considered a property of matter?

    <p>Speed</p> Signup and view all the answers

    Which of the following is true about plasma, the fourth state of matter?

    <p>It consists of ionized particles</p> Signup and view all the answers

    In the context of physics, what is the term used to describe the gravitational force acting on an object?

    <p>Weight</p> Signup and view all the answers

    What is the SI unit of momentum?

    <p>kg m/s</p> Signup and view all the answers

    Which of the following statements about the efficiency of machines is true?

    <p>Efficiency decreases with increasing output work.</p> Signup and view all the answers

    Which physical quantity describes the amount of matter in an object?

    <p>Mass</p> Signup and view all the answers

    Which physical quantity is defined as the rate of change of displacement?

    <p>Velocity</p> Signup and view all the answers

    What property of matter describes its resistance to change in shape or volume?

    <p>Rigidity</p> Signup and view all the answers

    What is the main form of energy transfer that occurs when you touch a hot object?

    <p>Conduction</p> Signup and view all the answers

    Which of the following properties is NOT typically associated with plasma as the fourth state of matter?

    <p>Definite shape and volume</p> Signup and view all the answers

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