The amplitude of the simple pendulum is ............ of a complete vibration.
The oscillating body moves at the two sides of its rest position, so its velocity ...................
If the periodic time of an oscillating body is 0.1 sec., the number of complete oscillations in one minute is ..............
The result of multiplying the frequency of an oscillating body by its periodic time equals ..........
Wave is the disturbance that propagates and transfers energy ..........................
In wave motion .....................
If the distance between the center of the third compression and that of the fifth compression on the wave propagation is 20 cm, the wavelength of this wave is .................
A girl stands watching water waves, she saw 4 waves passing in 2 seconds, the wavelength of each wave is 0.5 m, so its frequency and velocity will be ..................
The sound pitch increases by ...............
When the distance between the sound source and the ears is doubled, the sound intensity ..............
The resonance box increases the sound intensity because it ...............................
Light waves are ............................. waves.
Media that we can see objects less clearly through are called ..................
By increasing the thickness of the transparent medium, the quantity of light that passes through it ..............