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Question: can you please help me with these and explain the...

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Can you please help me with these and explain the answers?

The psychological or subjective parameter of frequency is:

A) pitch

b) amplitude

c) timbre

d) loudness

2) The intensity level of a sound is 50 dBlL. It's intensity output is

a) 10^-7 watts/m^2

b) 100 dB

c) 20 micropascals

d) 0.0002 dyn/ cm2

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