PD7 Waves by Thomas E Clark https://padlet.com/tec430/pin6rsroggrx (1)What is simple harmonic motion? (2) What is Hooke's Law and define variables (3) Explain how gravitational potential energy and KE changes during pendulum movement (4) Define the following Wave, Amplitude, period, frequency (5) What is the formula and variables to find period in simple harmonic motion of a pendulum and the formula for a mass-spring system. (6) What is a medium in relation to waves (7) What is a mechanical waves (8) What is a transverse wave (what does it look like and cite examples) (9) What is a longitudinal wave (what does it look like and cite examples) (10) Define a crest, trough and wave length (11) What is the difference between constructive and destructive interference. en-us 2018-03-19 20:02:36 UTC 2018-03-31 18:36:39 UTC hello@padlet.com Scott, Thomas, and Sam https://padlet.com/tec430/pin6rsroggrx/wish/243776084 1. Simple harmonic motion is the repetitive back and forth motion so that the maximum displacement on either side is equal and the time for either side is the same. 

2. Hooke's law defines the force required to stretch an elastic object such as a spring as directly proportional to the expression of the spring. F = -kx. F = force, x = extention/compression distance, k = spring constant.

3. The kinetic energy increases and the potential energy decreases as the pendulum swings down, then the reverse occurs when it swings up on the other side, slowly decreasing as some is lost from resistance.

4. Wave - a periodic disturbance of the particles of a substance that may be propogated without net movement of the particles
Amplitude - the maximum of a wave from the point of equillibrium
Period - the time needed to complete one cycle of vibration
Frequency - The number of wavelengths that pass per unit time.

5. The formula is T=2 π *(L/g)^(1/2). L is the pendulum length, g is the acceleration of gravity, and T is the pendulum period. The formula for a mass-spring system is f=kx.

6. The medium is what makes the transfer of energy from one location to another.

7. A mechanical wave is a wave that requires a medium to transmit energy, so it cannot transmit through a vacuum.

8. A transverse wave has the shape of sine or cosine. It oscillates at a right angle and has a given wavelength and amplitude. Some examples are light waves and springs.

9.  A longitudinal wave vibrates in the direction of propogation, such as a seismic P-wave or a sound wave.

10. A crest is the highest point within a wave and a trough is the lowest point. Wavelength refers to the distance between consecutive crests.

11. Constructve interference is when two waves with the same sign combine to form a new wave with a larger amplitude. Destructive interference is when waves have opposite signs and combine to form a wave with a smaller amplitude.]]> 2018-03-19 21:47:36 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243776084 Neha Bansal https://padlet.com/tec430/pin6rsroggrx/wish/243776085 1) Simple Harmonic Motion is an oscillatory motion under a retarding force proportional to the amount of displacement from an equilibrium position.

2)  Hooke's Law states that states that the force (F) needed to extend or compress a spring by some distance X scales linearly with respect to that distance F=ke (e= elasticity)

3)  Kinetic energy increases as the pendulum moves closer to equilibrium. As the pendulum moves further away, kinetic energy decreases.

4) Wave- oscillation accompanied by transition of energy Amplitude- maximum  
 displacement moved by a point. Period- time between waves. Frequency- rate of osculation between periods.

5) T=2pisqrt(L/G) where L is the pendulum length and G is the acceleration of gravity. The mass spring system formula is F=kx.

6) A medium is any substance that carries a wave.

7.) A mechanical wave does not actually transmit energy, it's an oscillation of matter caused by external force.

8.)  A transverse wave is a wave consisting of oscillations occurring perpendicularly

9) a wave vibrating in the direction of propagation. (earthquake).

10.) A crest is the point of the wave with the maximum value of upward displacement within a cycle. A trough is the minimum or lowest point in a cycle.

11.)  Contructive interference is the interference of two or more waves of equal frequency and phase.
Destructive interference is when waves come together in such a way that they completely cancel each other out and must have the same amplitude in opposite directions.
]]> 2018-03-19 21:47:36 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243776085 Tushar, David tlakshminarayanan https://padlet.com/tec430/pin6rsroggrx/wish/243776105 1. Oscillatory motion under a force that is proportional to the displacement from the original equilibrium position.
2.  Hooke's Law is F=KE
The Variables are F- Force, K- The spring constant, E- The extension of material
3. During pendulum motion, gravitational potential energy is at its highest when the pendulum is highest, because there it is motionless. It is lowest when the pendulum is at its lowest point. KE is the opposite, with it being highest at the lowest position, and lowest at the highest position.
4. Wave: An oscillation accompanied by a transition of energy.
Amplitude: Maximum distance or displacement moved by a point on a wave from the point of equilibrium.
Period: The time needed for a complete cycle to pass.
Frequency: The number of crests per a certain point,
5.  The formula is 2Pi times the square root of the mass divided by the spring constant
The mass spring formula is F=KX
6. The medium is the substance that the waves pass through in order for it to be heard.
7. A mechanical wave is an oscillation of matter, which can transfer energy.
8. A transverse wave is a wave with oscillation occurring perpendicular to the direction of energy transfer.
9. A longitudanal wave is one that oscillates back and forth along the axis that propogates.
10. A crest is the top of the wave, the trough is the bottom of the wave, and a wavelength is the distance between two crests.
11. Constructive interference is the combination of 2 or more waves of the same sign. Destructive interference is when two waves of different signs combine to form another wave.]]> 2018-03-19 21:47:42 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243776105 Abel and Henry https://padlet.com/tec430/pin6rsroggrx/wish/243776157 1. A simple harmonic motion is an oscillatory motion under a force that is proportional to the displacement from the equilibrium position.
2. Hooke's law states that F=ke (F=force K= elasticity constant E= distance pulled) which means that force needed to expand a spring is proportional to the distance pulled.
3.   In the movement of the pendulum, KE changes throughout as well as PE, but overall mechanical energy is conserved.
4.   A wave is an oscillation that travels through space and matter. The amplitude is the measure of change over a single period. A period is the time it takes a wave to complete one cycle. The frequency is cycles per second.
5.  T=2 π  √ L/g. L is the pendelum length. g is the acceleration of gravity. pendelum period. The mass spring system formula is F=kx 
6.The medium sound waves travels varies and can be things such as air or water.
7-11 is in Henry and Abel]]> 2018-03-19 21:47:54 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243776157 Carlos and Jonathan https://padlet.com/tec430/pin6rsroggrx/wish/243776214 1. Simple harmonic motion is  oscillatory motion under a retarding force proportional to the amount of displacement from an equilibrium position. 
2.  . When an elastic object - such as a spring - is stretched, the increased length is called its extension. F = k × e. F is the force in newtons. K is spring constant and E is extension
3. As the pendulum moves closer to the equlibrium and deceases as it moves away, kinetic energy incteases. As the pendulum moves towards the equilibrium point, its height decreases and therefore the gravitational potential energy decreases.
4. Wave: An oscilaton accompanied by a transition of energy.
Period: time between the different waves
Frquency: Rate at which there re oscillations in between a period.
5.T=2pi sq rt(m/k)
t= time period, k= spring constant, m=oscillating body mass
F=kx (F-force, k- spring constant, x- displacement)
6. A medium is anything that carries a wave.
7.Mechanical waves are oscillations of matter that are caused within diferrent mediums
8.A transverse wave is similar in form to a sine or cosine wave and are perpendicular to the initial wave
9.Longitudinal waves are waves that go in the opposite direction of thr displacemeny direction.
10.Crest is on top of a wave,
trough is the lowest point of the wave
wave length is a wave from a certain time 
11.The collision of two waves and how they cancel out]]> 2018-03-19 21:48:10 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243776214 Hepzi Dadala https://padlet.com/tec430/pin6rsroggrx/wish/243776247 1) Simple harmonic motion is a form of motion of a particle in which the acceleration is directed toward an equilibrium point and in which the maximum displacement from this point on one side is equal to the maximum displacement on the other side.
2) Hooke's Law states that F=ke. (e=elasticity, k for the rate, and f for the force). This equation essentially means that the force needed to expand a spring is proportional to the distance.
3) Kinetic energy increases as the pendulum moves closer to the equilibrium and decreases as it moves away. As the pendulum moves towards the equilibrium point, its height decreases and therefore the gravitational potential energy decreases.
4) Wave is the oscillation accompanied by a transfer of energy, amplitude is the maximum displacement or distance moved by a point. Period is the time between different waves. Frequency is the rate at which there are oscillations in between a period.
5) T=2pi sq rt (m/k)
t= time period, m = oscillating body mass, k = spring constant
F=kx (F-force, k-constant, x-displacement)
6) A medium is essentially anything that carries a wave.
7) Mechanical waves are oscillations of matter that are caused by external forces. These types of waves do not actually transmit energy.
8) A transverse waves are waves consisting of oscillations occurring perpendicular to the initial wave. https://www.differencebtw.com/wp-content/uploads/2016/11/longitudinal-wave-vs-transverse-wave-990x495.jpg (example in link)
9) Longitude waves are waves that go in the opposite direction of the displacement of the medium. 
10) Crest: top of each wave; trough: lowest point of the wavelength;
wave length: A wave from a certain time interval
11) Constructive inference is when the amplitudes have opposite signs so they substract to form a combined wave with a lower amplitude. Destructive interference is when the sound waves with the higher amplitudes sound louder than sound waves with lower amplitudes. ]]> 2018-03-19 21:48:20 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243776247 Henry and Abel https://padlet.com/tec430/pin6rsroggrx/wish/243776275 7. Mechanical waves are oscillations of matter such as in the case of a wave in the ocean.
8. Transverse waves have oscillations that occur at right angles. There are two independent directions for movement (x and y axis).
9. Longitudinal waves are waves vibrating in the direction of propagation. An example is sound waves.
10. A crest is the highest point of a wave while a trough is the lowest point of a wave. Wave length is the distance between two crests.
11. Constructive interference is when two waves collide to form a single wave while destructive interference is when two waves cancel each other out.]]> 2018-03-19 21:48:28 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243776275 Joanna and Daniel Part 1 https://padlet.com/tec430/pin6rsroggrx/wish/243776624 1. Oscillatory motion under a retarding force proportional to the amount of displacement from an equilibrium position. 
2. States that the that the force needed to extend or compress a spring by some distance is proportional to that distance. F=(k x e).
3.  PE = mgh
     KE = 1/2mv^2
4. Wave: is an oscillation accompained by a transfer of energy.
Amplitude: the maximum extent of a vibration measured from the position of equilibrium.
Period: a length or portion of time.
Frequency: the rate at which something occurs over a period of time.
5. T=2(pi) sqroot(length of  pendulum/ gravity)
6. Substance that makes possible that transfer of energy from one location to another through waves
]]> 2018-03-19 21:49:54 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243776624 Jacob Cayabyab *DAB https://padlet.com/tec430/pin6rsroggrx/wish/243776631 1. Simple harmonic motion is back and forth motion of a force proportional to displacement from the origin.
2. F = KE The force of an object is the spring constant multiplied by the extension of the material.
3. KE increases as the pendulum moves towards the middle and decreases as it moves away. The opposite is for kinetic PE; PE increase as the pendulum moves away from the middle and decreases as it move towars it.
4. Wave: Oscillation as energy is transferee from one place to another.
Amplitude: Maximum vibration (up and down) of a wave.
Period: The time it takes to do one complete cycle of a wave.
Frequency: The amount of waves completed in one second. Frequency and wavelength are inversely related.
5.  T = 2 (pi) sq root ( length of pendulum / gravity)
6. A substance that makes transfer of energy possible.
7. The oscillation of a matter within a medium. This is like sound since it needs air.
8. Similar to a sine or cosine wave; it oscillates at a right angle. It has a given wavelength and amplitude. Light comes in as transverse waves.
9. Take a polar form that looks like a spiral. Most music is made or longtitudinal waves and different oscillations.
10. The crest is the high point of a wave and the trough is the low point.
11. Constructive interference occurs when two waves mix together and increase the aplitude of th wave.]]> 2018-03-19 21:49:56 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243776631 Rodas Kenneth and Indira https://padlet.com/tec430/pin6rsroggrx/wish/243776673 1) It is the repetitive back and forth motion.
2) The Hooke's Law is the extension of a spring is directly proportional to the applied load and the provided the elastic limit is not exceeded. 
3) As the pendulum swings back and forth, there is a constant exchange between kinetic energy and gravitational potential energy.
4) Wave is a disturbance involving the transfer of energy from place to place. Frequency is number of waves that pass a point in a certain amount of time. Amplitude is the maximum distance the medium vibrates from the rest position. A period is the time to complete one cycle of vibration.  
5) T=2pi sq rt (m/k) 
t= time period, m = oscillating body mass, k = spring constant
F=kx (F-force, k-constant, x-displacement)
6) In the case of a water wave in the ocean, the medium through which the wave travels is the ocean water. In the case of a sound wave moving from the church choir to the pews, the medium through which the sound wave travels is the air in the room.
7) Mechanical waves are waves that require a medium. 
8) Transverse waves are waves vibrating at right angles to the direction of its propagation. Ex. a ripple on a pond.
9. A longitudinal wave is a wave in which particles of the medium move in a direction parallel to the direction the wave moves. This includes sound waves.
10.  Crest is the top of each wave trough through the lowest point of the wavelength.
The wave length is a wave from a certain time interval
11. Constructive interference is when waves come together so they are in place with each other Destructive interference is two or more waves come together subtracting their energy.



 
]]> 2018-03-19 21:50:08 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243776673 Ian Angelique https://padlet.com/tec430/pin6rsroggrx/wish/243776688 1)  A simple movemnt back and forth movement through and equilbrium. 
2) Hooke's Law states that the restoring force of a spring is directly proportional to a small displacement. 
3) PE is high at the top of the swing due to the pull of gravity, and changes into KE as the weight swings down.
4) Amplitude: Maximum vibration of a wave
Wave: Movement back and forth through an equilbrium
Period:Time needed to complete one cycle of a wave
Frequency: Amount of waves past a given point
5)  T=2pi sq rt (m/k) 
t= Time Period, m = Oscillating Body Mass, k = Spring Constant
F=kx (F-force, k-constant, x-displacement) 
6) A medium is the mass a wave travels through
7) A mechanical wave is a oscillation of matter
8) A transverse wave travels in the x axis ie ocean waves
9) Particles of a medium move parellel to the wave ie a tsumnami
10)  A crest is the top of the wave and the trough is the is the lowest point on the wave and the wave length is the distance between the two crests
11. Constructive interference is when two waves collide and turn into one and destructive interference is when two waves cancel each other out. ]]> 2018-03-19 21:50:12 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243776688 Josh Bronner https://padlet.com/tec430/pin6rsroggrx/wish/243777074 1. Simple harmonic motion is oscillatory motion under a retarding force proportional to the amount of displacement from an equilibrium position. 
2. Hooke's law is, within certain limits, the force required to stretch an elastic object such as a metal spring is directly proportional to the extension of the spring. The variables are F=-kx.
3. These two energies combine to create mechanical energy, which is conserved and as the pendulum swings, the energy is moved back and forth.
4. A wave is oscillation accompanied by a transfer of energy. Amplitude is the maximum extent of vibration or oscillation. A period is the time needed to complete one cycle of vibration. Frequency is the rate at which something occurs. 
5. T=2 PI square root (L/ag) is the simple pendulum while T=2 PI square root (m/k) is the mass spring formula
6. The relation intensifies with the waves. 
7. A mechanical wave is an oscillation of matter, and therefore transfers energy through a medium 
8. A transverse wave is a wave vibrating at right angles to the direction of its propagation. It goes up and down. Light is an example of a transverse wave. 
9. A longitudinal wave is a wave vibrating in the direction of propagation. The particles move parallel the wave's direction of travel. An example is pressure waves.
10. A crest is the point on a wave with the maximum value of upward displacement within a cycle. A trough is the opposite of a crest, so the minimum or lowest point in a cycle. A wave length is the distance between corresponding points of two consectutive waves.
11. These two waves have two different signs, but are both sound waves. ]]> 2018-03-19 21:52:03 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243777074 Taelynn and Sai https://padlet.com/tec430/pin6rsroggrx/wish/243778149  1) Simple harmonic motion is a simple movemnt back and forth movement through and equilbrium. 
2) Hooke's Law states that the restoring force of a spring is directly proportional to a small displacement. Variables include the extension os the spring. 
3) PE is high at the top of the swing due to the pull of gravity, and changes into KE as the weight swings down.
4) Amplitude: Maximum vibration of a wave
Wave: Movement back and forth through an equilbrium
Period:Time needed to complete one cycle of a wave
Frequency: Amount of waves past a given point
5)  T=2pi sq rt (m/k) 
t= Time Period, m = Oscillating Body Mass, k = Spring Constant
F=kx (F-force, k-constant, x-displacement) 
6. In relation to waves, a medium is  the matter that sound moves through such as water, air, or solids. 
7.  A mechanical wave is one that is an oscillation of matter, and therefore transfers energy through a medium. 
8. A transverse wave is a wave vibrating at right angles to the direction of its propagation.For instance, sound or a vibration in strings are transverse waves. The wave goes up and down.  
 9.  It is the wave vibrating in the direction of propagation. It looks like a spring and goes crazy.
10. A crest is the top of the wave and the trough is the is the lowest point on the wave and the wave length is the distance between the two crests
11. Constructive interference is when two waves collide and turn into one and destructive interference is when two waves cancel each other out. ]]> 2018-03-19 21:57:04 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243778149 Ejike https://padlet.com/tec430/pin6rsroggrx/wish/243778488 1.The simple harmonic motion is a  repetitive movement  equivalent to the displacement of the equilibrium
2 . Hooke's Law states that the force needed to expand a spring is proportional to the distance and the  formula for this is  F = k*e. E = elasticity, k =rate, and f=force. 
3. The  KE and pe changes throughout  the movement of the pendulum;however, the overall mechanical energy is conserved.
4. Wave is the oscillation along with the transfer of energy. Amplitude is the maximum displacement or distance moved by a point. Period is the time between  the different waves. Frequency is the rate at which there are oscillations in between a period.
5.The formula for harmonic is T=2pisqrt(L/G).  L is the pendulum length and G is the acceleration of gravity. The mass spring system formula is F=kx.
6. The medium that sound waves travel through varies, but it can be affected by external forces such as, air, water, and other forms. 
7. A mechanical wave is a wave that oscillated with matter and  it also travels a far distance from the initial position. 
8. A transverse wave is a wave consisting of oscillations at an perpendicular angle. 
9. A longitudinal wave is a wave in which particles of a medium move in a direction parallel to the medium. 
10.The crest is the highest point of the wave. The trough is the lowest point  Wavelength is the horizontal distance between waves in a series and it can be measured between two troughs or two crests.
11. Constructive interference happens when amplitudes have opposite signs due to a combined wave with a lower amplitude. Destructive interference occurs when amplitudes of higher frequencies sound louder than low amplitude sounds.  


]]> 2018-03-19 21:58:24 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243778488 Sven, Sri, and Adrienne https://padlet.com/tec430/pin6rsroggrx/wish/243778800  
  1.  Simple harmonic motion is a repetitive movement through a center position so that the displacement on each side is equal. Because the displacement is the same, the force of each side is equal and the time of the vibrations is also the same. 
  2.  Hooke’s Law states that the displacement or size of the deformation is directly proportional to the deforming force. The two variables are force (F) and X scales. 
  3. When a pendulum swings back and forth, there is a constant exchange of potential and kinetic energy. When the swing reaches its maximum displacement, there is a maximum amount of potential energy. At the peak, there is no speed, so the kinetic energy is zero. As the pendulum goes down, the kinetic energy goes up. 
  4. A wave is a progressive disturbance propagated from point to point in a medium or space without progress or advance by the points themselves. An amplitude is the height of a wave. The period is the distance from one trough or crest to another. Frequency is the amount of wave crests or troughs that passes through a point in a given amount of time.
  5. T=2π√(L/ag) is the equation for a simple pendulum (T → period(s) L → length of pendulum (m) ag  → gravity (m/s2))  and T=2π√(m/k) is the equation for a mass-spring system (T → period(s) m →mass (g) k → spring constant (N/m)).
  6. A median in terms of waves is a substance that makes possible the transfer of energy from one location to another. 
  7. Mechanical waves refer to the oscillation of matter within a medium. This can refer to things such as sound which require air to work properly.
  8. A transverse wave is similar in form to a sine or cosine wave meaning that it oscillates at a right angle. It has a given wavelength and amplitude. Light typically comes in the form of transverse waves.
  9. Longitudinal waves are more interesting and take on a circular/polar form in which they circle around like a spiral. Typical music is made of longitudinal waves and different oscillations, their sound is altered through fade-off in amplitude, difference in wave-length, etc.
  10.  A crest is a high point within the wave, while the trough acts as the low point of said wave. Wavelength refers to the distance between the repetition within a wave (this can be measured from crest to crest or trough to trough).
  11.  Constructive interference occurs when two waves mix together and increase the amplitude of wave. Thus, the crests and troughs are respectively higher and lower (imagine a song boosted way above the volume it was recorded at). Destructive interference occurs when waves cancel each other leading crests and troughs to move closer towards the center (imagine a song in which the volume is lowered to a point where the song is almost inaudible). 
]]> 2018-03-19 21:59:52 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243778800 Joanna and Daniel Part2 https://padlet.com/tec430/pin6rsroggrx/wish/243780167 7. A mechanical wave is a wave that is an oscillation of matter, which means it transfers energy through a medium.
8. A transverse wave is a wave that vibrates at right angles (90 degrees) towards its propagation. It looks like a series of crests with troughs in between each crest. An example of this is the vibration in a string.
9. A longitudinal wave is a wave that vibrates towards its propagation. It looks like a spring like the ones in pens. An example is a sound wave.
10. A crest is the point on a wave with the highest point and the trough is the lowest point and a wavelength is the distance between 2 crests.
11. The difference between constructive and destructive interference is that a constructive intereference has a higher amplitude whereas a constructive has a lower amplitude. In a constructive 2 waves meet up to line up their crests while in a destructive the waves' crests meet the other waves' troughs.]]> 2018-03-19 22:06:32 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243780167 Ruchika, Amrita, Derek https://padlet.com/tec430/pin6rsroggrx/wish/243780298 (1)What is simple harmonic motion?
Simple harmonic motion is oscillatory motion under a retarding force proportional to the amount of displacement from an equilibrium position.
 (2) What is Hooke's Law and define variables 
Force in N (F) = -k (Spring constant in N/m) * x(deformation in m)
(3) Explain how gravitational potential energy and KE changes during pendulum movement 
At the highest point of the swing, the object has no kinetic energy and the maximum gravitational potential energy. At the minimum height, the object has the maximum kinetic energy and minimum gravitational potential energy. From left to right, the object loses potential and gains kinetic energy until it reaches the minimum height. From the minimum height to the right, the object loses kinetic energy and gains potential energy.
(4) Define the following Wave, Amplitude, period, frequency 
A wave is any regularly recurring event that is a disturbance through a medium. Amplitude is the height of the wave, frequency is the rate at ehich the vibration occurs, and period is the time needed for one complete cycle of vibration to pass a given point. 

(5) What is the formula and variables to find period in simple harmonic motion of a pendulum and the formula for a mass-spring system. 
For the period of a pendulum, where T is the period, L is the effective length of the pendulum, and g is the acceleration due to gravity.
T=m12u2dm
This is the formula for a mass-spring system.
(6) What is a medium in relation to waves 
A medium is what the waves travel through.
(7) What is a mechanical waves
A mechanical wave is the transfer of energy through a medium, otherwise defined as the oscillation of matter.
(8) What is a transverse wave (what does it look like and cite examples) 
A transverse wave is a wave vibrating in a direction that is at a right angle relative to its point of origin.
(9) What is a longitudinal wave (what does it look like and cite examples)
In a longitudinal wave, the displacement of the medium is parallel to the direction of propagation. An example would be seismic P-waves created by earthquakes and explosions. 
(10) Define a crest, trough and wavelength
Crest is the highest point on a wave; it is the point on a wave with the maximum value of upward displacement in one cycle. 
Trough is the lowest point on a wave; it is the point on a wave with the minimum value of downward displacement in one cycle.
Wavelength is the distance between corresponding points of two consecutive waves.
 (11) What is the difference between constructive and destructive interference.
Constructive interference is when the crests of two waves line up together (in this case the waves reinforce each other and the combination result is a single amplitude equal to the sum of their individual amplitudes), while destructive interference is when the crest of one wave meets the trough of another and the combination result is a lower total amplitude. 
]]> 2018-03-19 22:07:13 UTC https://padlet.com/tec430/pin6rsroggrx/wish/243780298 Josh Bronner https://padlet.com/tec430/pin6rsroggrx/wish/244765468 1. ]]> 2018-03-21 21:15:11 UTC https://padlet.com/tec430/pin6rsroggrx/wish/244765468 Daniel Shin https://padlet.com/tec430/pin6rsroggrx/wish/247617679 1. Oscillatory motion back and forth in which force is equal to displacement from the center.
2.Force needed to extend a spring is directly proportional to the distance displaced. F= k * x. F is force, k is spring constant, x is distance.
3. GPE is highest at the highest point of the pendulum while KE = 0. At the lowest point, GPE is at its lowest value while KE is at its highest.
4.Wave: Transport of energy which disturbs but does not transfer matter.
Amplitude: Strength of a wave.
Period: Time it takes for one cycle of vibration to pass through a certain point.
Frequency: How frequently, for a given time, cycles of vibration pass through a certain point.
5.Spring: T=2pi * sq rt (m/k) 
Pendulum: T=2pi * sq rt (L/g)
6. A medium is the type of matter through which a wave propagates i.e. what energy is transferred via.
7.Oscillation of matter which in turn transfers energy.
8.A transverse wave is a wave in which oscillation is perpendicular to the direction of wave propagation.
9. A longitudinal wave travels in the direction of oscillation and includes seismic P-waves.
10.Crest: Highest point of a wave.
Trough: Lowest point of a wave.
Wave length: Distance between two troughs.
11.Constructive interference is the amplification of a wave's signal due to overlap while destructive interference cancels out two waves because their troughs and crests overlap.]]> 2018-03-31 18:20:23 UTC https://padlet.com/tec430/pin6rsroggrx/wish/247617679