d. all of these
look at the picture to know from where we get this law with application on it
I am pretty sure that the only statement which is true for particles of the medium of an earthquake P-wave is being shown in the option : b)vibrate parallel to the wave, forming compressions and rarefactions. As you know, <span> it can be formed in two ways : from alternating </span>compressions<span> and </span>rarefactions<span> or </span><span>primary wave. I bet you will agree with me.</span>
Answer:
Explanation:
a ) For the ray going into syrup , angle of incidence ( i ) is 29.4 and angle of refraction ( r ) is 18.84
Refractive index of syrup = Sin i / Sin r
= Sin 29.4 / Sin 18.84
= 1.51 .
b ) The wavelength of a light is reduced in a medium by the factor of refractive index so
wavelength in the medium
= Wavelength in air / refractive index of the solution
= 632.8 / 1.51
= 419.07 nm .
The frequency remains unchanged . The frequency in the medium will be same as that in air or vacuum.
Frequency in air = Velocity of light in air / wavelength in light
= 3 x 10⁸ / 632.8 x 10⁻⁹
= 4.74 x 10¹⁴ Hz.
Frequency in the medium is same as that in air.
Velocity in the medium
V = velocity in air / refractive index
= 3 x 10⁸ / 1.51
= 1.98 x 10⁸ m /s
Answer:
the process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge, typically accompanied by interference between the wave forms produced. Diffraction refers to various phenomena that occur when a wave encounters an obstacle or opening. It is defined as the bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture.
Explanation: FYI I gave you the def and what it refers to BTW
B) droops.
Why?
To maintain balance, you do not need something short so you're balanced well... You need something long and droopy to maintain balance. The pole should be held by your waist and it should be light.
Hope this helps!~