Choices 1, 2, and 4 . . . . . Yes
Choices 3 and 5 . . . . . No
family 16 cause i said so XD
Answer:
please write neater
Explanation:
can you write neater so I can answer th question but also is a equal to b
B.
technically it would depend if the resistors were in series or parallel but B is the answer.
Answer:
r₂ = 0.2 m
Explanation:
given,
distance = 20 m
sound of average whisper = 30 dB
distance moved closer = ?
new frequency = 80 dB
using formula

I₀ = 10⁻¹² W/m²
now,



to hear the whisper sound = 80 dB



we know intensity of sound is inversely proportional to square of distances



r₂ = 0.2 m