Physics Journal by Hanin ouf https://padlet.com/haninouf2007/n0qqvq95tlnlasez Made with big dreams en-us 2020-06-24 18:37:40 UTC 2026-01-17 05:56:12 UTC hello@padlet.com https://padlet.net/icons/png/1f4d8.png Periodic Motion haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786046165 New Vocab:
Period(t) = is the time needed for one full cycle of the motion.
Amplitude = is the maximum distance the object moves from equilibrium position.
Simple pendulum = consist of massive object called the bob suspended by a string or a light rod of length
Any system where force acting to restore an object to its equilibrium position is directly proportional to the object's displacement shows simple harmonic motion.


]]> 2021-10-02 15:27:39 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786046165 Hooke's Law haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786059996 F = -k • x       ]]> 2021-10-02 15:39:21 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786059996 haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786062160 F unit is N   k unit is N/m  x unit is m

  • k is the spring constant 
  • x is the distance
  • k is the slope of line in the graph
]]> 2021-10-02 15:41:10 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786062160 Potential Energy In A Spring haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786069588 PEspring = -1/2 •  k • x2]]> 2021-10-02 15:47:33 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786069588 What is the spring constant of a spring that stretches 12 cm when an object weighing 24N is hung from it haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786077718 Given: F=24N     x: 12cm or 0.12m

Unknown: k=??

Solve:

F=-k•x

24 = -k • 0.12

 24 ÷ 0.12= -k

200N/m = -k
]]> 2021-10-02 15:54:11 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786077718 What is the elastic potential energy of a spring with k=144N/m that is compressed by 16.5m? haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786085707 Given: k : 144N/m     x : 16.5m

Unknown: PEspring=??

Solve:
PEspring = -1/2 • k • x2

PEspring = -1/2 • 144 • (16.5)2

PEspring = -19602

]]> 2021-10-02 16:00:47 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786085707 Period of pendulum haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786112760 T = 2(3.14)Pie √l÷g]]> 2021-10-02 16:22:12 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786112760 haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786115753
  • Period only depends on the length of the pendulum and the gravitational field.
  • The mass of the bob does not affect the period
    • ]]>     2021-10-02 16:24:42 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786115753     What is the period on earth of a pendulum with length of 1.0m? haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786119856 2021-10-02 16:27:44 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786119856 Lesson 2(Wave properties) haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786126229 New Vocab:
    • Wave: is a disturbance that carries energy through matter or space without transferring matter.
    • Wave pulse is a single bump or disturbance that passes through a medium.
    • A wave that disturbs the particles in the medium perpendicular to the direction of the wave's travel is called a transverse wave.
    • Longitudinal wave: is a disturbance parallel to the direction of the wave's travel.
    • The shortest distance between two points where the wave pattern repeats itself is called the wavelenght
    • Frequency of a wave is the number of complete oscillations a point on that wave make each second
    ]]>     2021-10-02 16:32:35 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786126229     haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786233104
  • Mechanical waves pass through a physical medium such as water , air, or a rope
  • Water waves, sound waves, and the waves that travel along a rope or a string are mechanical waves.
    • ]]>     2021-10-02 18:06:50 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786233104     Types of waves: haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786251764
  • Transverse waves:                                                               •The wave pulse disturbs the rope in a vertical direction, but the pulse travels horizontally.                          •If the disturbance continues at a constant rate, a periodic wave is generated                                                  
  • Longitudinal waves:                                                            •Sound waves are longitudinal waves in which the molecules are alternately compressed or decompressed along the path of the wave.
  • Surface waves:                                                                     • At the top and bottom of the circular path, particles are moving parallel to the direction of the wave's travel.
    • At the left and right sides of each circle, particles are moving up or down, perpendicular to the waves direction
    • ]]>     2021-10-02 18:25:51 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786251764     Wave Properties: haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786266147
  • Amplitude:                                                                                                • Since amplitude is a distance it is always positive  
    • More energy greater amplitude
    • Doubling amplitude increases energy each second by a factor of four.
  • Wavelength:                                                                                              •The Greek letter lambda represents the wavelength
  • Speed and velocity:                                                                               •Speed only depends on the medium, the temperature of the medium also makes difference.Ex: sound waves travel faster in warm dry,dry air than in cold, dry air.
  • Phase:                                                                                          •   Particles with opposite displacements form the equilibrium position and opposite velocities are 180 degrees out of phase.

    • ]]>     2021-10-02 18:39:46 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786266147     Lesson 3(Wave Behavior) haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786279195 New Vocab:
    • The pulse that strikes the boundary is called the incident wave.
    • The returning wave is called the reflected wave.
    • The result of the superposition of two or more waves is called interference.
    • When the superposition of waves with equal but opposite displacements causes destructive interference.
    • Node is the point that does not move at all, and the displacement is zero (no amplitude)
    • constructive interference occurs when wave displacements are in the same direction
    • Antinode: the displacement is at maximum(amplitude)
    • The wave that appears to be standing still is called a standing wave.
    • Ray is a line drawn at a right angle to the wavefront
    • The law of reflection states that the angle of incidence is equal to the angle of reflection.

    ]]>     2021-10-02 18:52:50 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786279195     haninouf2007 https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786300119
  • Two or more waves can combine to form a new wave.
  • When a wave pulse hits a rigid boundary , the energy is reflected back. note that the pulse is inverted
    • ]]>     2021-10-02 19:12:57 UTC https://padlet.com/haninouf2007/n0qqvq95tlnlasez/wish/1786300119