If a speaker gives a sound intensity of 10^-6w/m^2 at a certain point, what is the sound intensity level beta at that point

60dB

Explanation:

Sound intensity level β = 10log(I/Io)

Where Io= 10^−12 W/m2 is the reference intensity .

I= 10^-6W/m^2

β= 10log(10^-6/10^-12)

β= 10log(10^6)

β= 10×6 × log 10

Where log 10=1

β=60dB

Therefore, sound intensity level β is 60dB

gans

explanation:

vestigial organs (like your appendix) are organs that no longer serve a purpose.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: