Physics Chapter: Forces and Their Properties

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Questions and Answers

What does the study of mechanics focus on?

  • The nature of heat and its transfer
  • The behavior of atomic particles
  • The production of sound waves
  • The motion of objects and its causes (correct)

Which branch of physics deals primarily with sound waves?

  • Light (Optics)
  • Nuclear Physics
  • Heat
  • Sound (correct)

What is the main focus of nuclear physics?

  • The structure and properties of atoms
  • The ionic state of matter
  • Properties and behavior of atomic nuclei (correct)
  • Charges at rest and in motion

Which branch of physics explores the internal structure of the Earth?

<p>Geophysics (C)</p> Signup and view all the answers

What do plasma physics study?

<p>The production and properties of the fourth state of matter (C)</p> Signup and view all the answers

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Study Notes

Parallel Forces

  • Parallel forces act in the same direction
  • Like parallel forces act in the same direction, for example, the weight of multiple apples acting downwards
  • Unlike parallel forces act in opposite directions, for example, the weight of an apple pulling it downwards and the tension in a string pulling the apple upwards

Addition of Forces

  • Force is a vector quantity with magnitude and direction
  • Forces can be added

Resolution of Forces

  • The process of splitting a force into its components is called the resolution of forces
  • The components are called perpendicular components if they are perpendicular
  • The equation for force F is expressed as $F = F_x + F_y$
  • The x-component of F can be calculated with $F_x = cos θ \times F$
  • The y-component of F can be calculated with $F_y = sin θ \times F$

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