Answer:
radian
Explanation:
We are given that
Wavelength=
We have to find the phase difference when the wavelength is equal to half of the initial wavelength.
Path difference=
For interference
Phase difference=
Substitute the value
Phase difference=
Phase difference= radian
Answer:
potential energy=mgh (weight × height)
m=20kg
g=9.8m/s2
h=8
20×9.8×8=1568
The potential energy is 1568J
Answer:
Speed = Wavelength x Frequency.
Explanation: