You do it by the pressure difference it causes in the medium. Even in transversal waves, you usually need different units than meters because the wave has electric and magnetic vectors and not really any height to speak of.
you measure the amount of excursion from the equilibrium (no wave) level of whatever parameter is fluctuating.
Answer:
1.Cp₁ = 1.2 J/g.⁰C
Explanation:
For new material:
m₁ = 25 g
T₁ = 80⁰C
specific heat of water = Cp₁
For water :
m₂ = 100 g
T₂ = 20⁰C
The final temperature T=24⁰C
We know that specific heat of water Cp₂ = 4.187 kJ/kg.K
The heat lost new material = Heat gain by Water
m₁ Cp₁ ( T₁ - T ) = m₂ Cp₂ (T- T₂)
25 x Cp₁ (80- 24 ) = 100 x 4.817 (24 - 20 )
Cp₁ x 56 = 4 x 4.187 x 4
Cp₁ = 1.19 kJ/kg.K
Cp₁ = 1.2 J/g.⁰C
Magnetic force = charge × speed × magnetic field
Fm = (1.6x10^-19)(3x10^6)(0.02)
Fm = 9.60x10^-15 N
^That is the magnitude of the magnetic force. If you want the direction, you will need to know what direction the speed and magnetic field are. Then you can use the left hand straight fingered rule to determine the direction of the force.
The momentum of the car is equal to:
We need to find the new speed v at which the new system (bycicle+rider) have same momentum p of the car. The mass M of the new system is M=120 kg. Using the value of momentum we found previously and the same formula for the momentum, we find
So, the speed of the bycicle must be 84 m/s.
Complete Question
Index of refraction is defined as the speed of light in a vacuum divided by the speed of light in the medium. What is the index of refraction for a glass sample? Speed of light in a vacuum c = 3.0 x 108 m/s. Speed of light in the glass = 1.50 x 108 m/s.
Answer:
The index of refraction is
Explanation:
From the question we are told that
The speed of light in a vacuum is
The speed of the in the glass is
From the question the index of refraction for a glass is mathematically evaluated as