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Why ultrasound is useful in medical field.

asked Oct 17, 2017 in Physics by sonia (36.5k points)

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Will two separate 50 dB sounds together constitute a 100 dB sound? Explain.

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Is there any difference between echo and reflection of sound? Explain.

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Two people are listening to the same music at the same distance.

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A student says that the two terms speed and frequency of the wave refer to the same thing. What is your response?

asked Oct 17, 2017 in Physics by sonia (36.5k points)

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Why must the volume of a stereo in a room with wall-to-wall carpet be turned higher than in a room with a wooden floor?

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You can listen to your friend round a corner, but you cannot watch him/her. Why?

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We can recognize persons speaking with the same loudness from their voice. How is this possible?

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Why two tin cans with a string stretched between them could .

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What would happen to the loudness of sound with increase in.its frequency?

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Which property of sound waves determines its (a) Ioudness (b) pitch?

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Why the voice of women is more shrill than that of men?

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Suppose you and your friend are on the moon. Can you be able to hear any sound produced by your friend?

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Why are sound waves called mechanical waves?

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Explain how sound is produced by a school bell?

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How are Cracks detected in the interior of moving parts of high speed heavy machines?

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How is depth of water measured by echo method?

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What are the uses of ultrasound in medicine?

asked Oct 17, 2017 in Physics by shamroz (41.5k points)

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What is ultrasound or ultrasonic?

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What is meant by audible frequency range? Does this range vary with the age of people? Explain.

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