Answer:
Oc.
Explanation:
Velocity is a vector which also tells us direction, speed doesn’t.
Speed doesn’t represent the potential of an object.
Answer:
The speed of the laser light in the cable,
Explanation:
It is given that,
Wavelength of Argon laser,
Refractive index, n = 1.46
Let is the speed of the laser light in the cable. The speed of light in a medium is given by :
or
So, the speed of the laser light is . Hence, this is the required solution.
Answer:
Ф = 142.674 degree
Ф = 2.490131057 rad
wavelength = 0.396316 λ
Explanation:
Given data
combined wave having an amplitude 0.64 times
to find out
answer in degrees, radians, and fraction of the wavelength
solution
let us consider these two wave equation
Asin(ωt) and the Asin (ωt + Ф)
and here Ф is phase difference
so we say
resultant wave is
Y = Asin(ωt) + Asin (ωt + Ф) = Asin(ωt + Ф/2) cos ( Ф/2)
so Y = A' sin(ωt + Ф/2)
we know that here resultant wave amplitude is 2A cos ( Ф/2)
so
put A= 0.64 A
so 2Acos ( Ф/2) = 0.64 A
and Ф/2 = 71.3370
Ф = 142.674 degree
Ф = 2.490131057 rad
so wavelength is 2.490131057 / 2π
wavelength = 0.396316 λ
Answer:
The required mass of ice is 12.5 kg.
Explanation:
Mass of hot tea, = 1.8 kg
Initial temperature of hot tea = 80°C = 353 K
Initial temperature of ice = 0.00°C = 273 K
Final temperature of mixture = 10°C = 283 K
Heat of fusion of ice, L = 334 kJ/kg
Specific heat capacity of tea, = Specific heat capacity of water = 4190 J/kg/K
Heat lost tea = Heat gained by ice
Δ = L + Δ
Δ = (L + Δ)
1.8 x 4190 x (353 - 283) = (334 + (4190 x (283 - 2730))
1.8 x 4190 x 70 = (334 + (4190 x 10))
527940 = 42234
=
= 12.5004
= 12.5 kg
The required mass of ice is 12.5 kg.