Wave Speed

Question 1

What is a medium in physics

Answer 1

Substance that carries a wave (or disturbance) from one location to another

Question 2

Equation of speed of waves on stringed instruments

Answer 2

In a stretched string, the speed that the wave travels down the string is determined by the following:

𝑣=√(𝑇/𝜇)

v = speed of the wave (m/s)
T = tension on the string (N)
𝜇 = mass per unit length - m/L (kg/m)

Question 3

Speed of light

Answer 3

In vacuum light and other electromagnetic waves

2.998x10⁸ms⁻¹

Question 4

Refraction of light equation

Answer 4

n(refractive index) = c/v

c(velocity of light in vacuum)

v(velocity of light in medium)

Question 5

Air columns in pipes

Answer 5

Speed of sound in air is fixed for any given temp and pressure of medium

only tune brass and woodwind instrumentals by altering length of pipe being used

Question 6

Tuning strings

Answer 6

U can tune notes without changing length of string. Making changes to medium (string) alters speed of waves

Question 7

Effect of tuning instruments

Answer 7

Thicker strings with more mass per unit,μ , give slower speed. Give lower note

Tighter strings with more tension, T, give faster speed . Giver higher note

Tension is a force measured in newtons