Answer:
As a substance reaches the melting point, the particles begin to move faster, causing the substance to become a liquid.
Explanation:
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Answer:
t = 2 s
Explanation:
As we know that when object comes back to its initial position then the displacement of the object will be zero
so here we can say by kinematics equation
here we know that
now from above equation we know
so from above equation we have
t = 2 s
In acoustics, a beat is an interference pattern between two sounds of slightly different frequencies, perceived as a periodic variation in volume whose rate is the difference of the two frequencies. With tuning instruments that can produce sustained tones, beats can be readily recognized. So I believe D.
Answer:
Explanation:
The refractive index of sea water is more than refractive index of water . so when light passes from water to sea water or from low refractive index to high refractive index , ray of light bends towards the normal . This bending is very small because the difference in refractive index is very small.
Answer:
T = 10 s
Explanation:
First, we need to find the frequency of the object as follows:
where,
Speed = Angular Speed = 6 rpm
Therefore,
Now, for time period (T):
<u>T = 10 s</u>