Question

After watching the bell jar experiment during investigation 1, do sound waves require a medium?
A.No, sound waves are mechanical waves that do not require a medium.


B. Yes, sound waves are mechanical waves that require a medium.


C .No, sound waves are transverse waves that do not require a medium.


D. Yes, sound waves are transverse waves that require a medium.

Answer 1

Explanation:

The experiment is done by placing an electrical bell in the bell jar. ... However, the sound is not audible to our ears because of the vacuum inside the jar. This demonstrates that the sound wave cannot travel through vacuum. That is, a sound wave needs a material medium for its propagation

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Answer 2

Answer:

X-axis=(5,0)   Y-axis =(0,5)

Comparing with (n,0)  and  (0,m)

n=5  and m=5

∴m+n=5+5=10