Answer:
Option B. magnitude of displacement of a sound pressure wave
Explanation:
Amplitude is simply the maximum displacement of a wave from its mean position.
Answer:
Assuming that a transformer is 100 per cent efficient, the following equation can be used to calculate the power output from the transformer: A step-down transformer converts 11 500 V into 230 V ...
Explanation:
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Answer:
it change speed
Explanation:
its because when light passes through one medium to another (rarer to denser)its velocity change and its speed also changes
