Answer:
Explanation:
Given
Frequency of whistle
Human hearing frequency
When a source or observer moves relative to each other then there is change in apparent frequency which is given by
where v=velocity of sound(340 m/s )
=velocity of observer
=velocity of source
=apparent frequency
=original Frequency
Answer:
Electromagnetic field, a property of space caused by the motion of an electric charge. A stationary charge will produce only an electric field in the surrounding space. If the charge is moving, a magnetic field is also produced. An electric field can be produced also by a changing magnetic field.
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The correct answer is option A. 1/4 times
This is because distance and force are inversely proportional
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Answer:
Symptoms of carbon dioxide toxicity include high blood pressure, flushed skin, headache and twitching muscles
Hope this helps :)