Answer:
a) 357.29 Hz
b) 535.9375 Hz
Step-by-step explanation:
v = Velocity of sound in air = 343 m/s
l = length = 24 cm
a)


∴ Resonant frequency is 357.29 Hz
b) Here one third is filled with soda
So, length becomes 

∴ Resonant frequency is 535.9375 Hz
Answer:
Surface area of the box is 
Step-by-step explanation:
The box is in the shape of a cuboid:
Surface area of the cuboid = 2(L*W+W*H+H*L)
Length(L)=20.1 m
Width(W)=6.8 m
Height(H)=7.4 m
Surface area:

The surface area of the box is 
I’m guessing that the answer is 3
( I don’t see anything)
Answer:
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Step-by-step explanation:
2.57
The answer would be C. 12+8i/13