Answer:
d=3.76 cm
Explanation:
Given that frequency ,f= 4.55 KHz
Speed of sound = 343 m/s
We know that for sound
C= f λ
Where C is the velocity of sound
f is the frequency
λ is the wavelength
So now by putting the values
C= f λ
343= 4550 λ
λ=7.53 cm
We know that for destructive phase the difference in phase is π so the difference in distance will be λ/2.
So distance ,d= λ/2.
d=7.53/2 cm
d=3.76 cm
So they will move at a distance of 3.76 cm to hear minimum intensity of sound.
Answer:
The answer is 'D' none
Explanation:
In the figure shown we have

From the figure we can see that

Thus value of tension be will be

1. Rainbow (white light is split into its subsequent wavelengths)
2. Light enters through the cornea, is adjusted by the lens, the cones and rods of the retina are responsible for the perception of color and shadows, which are sent through the optic nerve to the occipital lobe of the brain.
3. Sound waves are intercepted by the pinna, travels through the auditory canal, reverberates on the eardrum, the vibrations travel through the ossicles of ear (hammer, anvil and stirrup), continuing to the cochlea and are sent through the auditory nerve to the brain.
4. A medium
5. Vibrations
6. All
7. Faster
8.Their kinetic energy increases
9. Conduction, convection and radiation
10. The heating of metals in the mantle, creates a current which slowly moves the plates above it.