Answer:
It is perceived as louder.
Explanation:
Amplitude affects the loudness of sound.
Frequency and wavelength affect the pitch of the sound.
Answer:
= 1.132 A
Explanation:
Given that:
A 120-V rms voltage at 60.0 Hz which applied across an inductor, capacitor and a 100- resistor in series.
If the maximum value of the current in this circuit = 1.60 A
what is the rms value of the current in this circuit i.e the = ????
The relation between and can be expressed by the formula:
=
1.60 = 1.414 *
=
= 1.132 A
Thus, the value of the current this circuit = 1.132 A
Answer:
B
Explanation:
The kinetic energy in an object is converted into potential energy. This makes the kinetic decrease, while the potential increases.
Sound intensity of 1 baby, I = 8*10^-8 W/m^2
The sound heard should be higher by:
10*log (n) where for 5 babies, n = 5. Then
10*log (n) = 10*log (5) ≈ 7 dB
Also give is the reference sound, Io = 1.0*10^-12 W/m^2
Therefore,
Sound intensity, L1 = 10*log (I/I1) = 10*log [(8*10^-8)/(1*10^-12)] ≈ 49 dB
Therefore, total intensity for the five babies is:
Total intensity = 49+7 = 56 dB