Physics waves and energy

Waves and energy mind map

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  • Created by: neve_xx
  • Created on: 26-09-22 14:22
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  • Physics: Energy and Waves
    • Energy
      • Energy Stores
        • Energy Stores
          • Thermal
            • Gravitational Potential
              • U = mgh
                • A man of mass 70 kg climbs a flight of stairs that is 3 m higher than the floor. Gravitational field strength is approximately 10 N/kg.Calculate the increase in his gravitational potential energy store.
                  • 70 kg     3m higher      10N/kg
                    • U = mgh
                      • 70kg x 10N/kg x 3m = 2100 J
              • Elastic potential
                • Ee = ½ × k × e2
                • Kinetic
                  • Ek = ½ × m × v^2
                    • Measurement is Joules (J)
                      • Spring constant = 250N/m. Stretches from 10.0cm to 11.4cm
                        • Extension (e)  final length - original length   11.4 - 10.0 = 1.4cm   1.4cm = 0.014m
        • The different ways energy can be transferred: mechanically, through heating, via infrared radiation, via light or sound waves
    • Waves
      • Longitudinal and Transverse waves
        • Transverse waves
          • Transverse waves are waves where the oscillations are perpendicular to the direction of energy transfer
            • The direction in which the wave is moving
            • Waves go up & down and travel left to right
              • All electromagnetic waves such as light and radio waves
        • The formula for frequency is: 1/T
        • Longitudinal Waves
          • Have oscillations that are parallel to the direction of energy transfer
          • Has regions that are more spread out and compressed
          • Waves are vibrating back and forth
          • Seismic p waves and sound waves
      • Transfer (move) energy from one place to another. DON'T TRANSFER ANY MATTER
      • Wave Speed: v = f?
        • A wave has a wavelength of 3 m and frequency of 20 Hz.What is the wave's speed?
          • 3m     20Hz
            • v = 20 x 3 = 60 m/s
      • The wavelength of a wave is the distance of one entire oscillation of that wave.
        • The amplitude of a wave is the maximum displacement from the equilibrium position (the x-axis).
    • How the mind map works: click to move around the mind map. The mind map includes: formulas, info, worked examples and you have to zoom in and move around a lot as there are a lot of bubbles/boxes :)  here's a demo of how it works:

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neve_xx

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Hi! Sorry, just forgot to mention this in the title of the mindmap 

this is about waves and energy stores :)

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