Referring to the graph below of data describing a cart pulled across a level surface. When a 4 N force pulls on the cart, the ca
rt accelerates at 5 m/s^2. What is the friction force resisting the pull?
2 answers:
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Given:
I = 30dB
P = 66 × Pa
Solution:
Formula used:
I = (1)
where,
I = intensity of sound
P = absolute pressure
= reference pressure
Using Eqn (1), we get:
=
= 2.08 ×
Pa