<span>northwest Australia between Exmouth and Broome in Western Australia and in northeast Queensland between Port Douglas and Maryborough</span>
<span>So we wan't to know which harmonic is the frequency of Fn=1056 Hz if we know that the fundamental frequency F1=528 Hz. So the frequency of n-th harmonic Fn is fundamental frequency F1 multiplied by n or Fn=n*F1. In our example we know the fundamental frequency and an overtone frequency and we want to know which harmonic it is so we are looking for n. So n=Fn/F1 and after we input our numbers we get that n=1056/528=2. So the frequency of 1056 is the frequency of the second harmonic.</span>
<span>Answer:
I guess there is is a typo in your question both change in enthalpy and change in internal energy for the combustion are negative:
â†H = -5074 kJ
â†U = - 5084.2 kJ
Work done to surrounding in a process is given by the integral:
W = â« P dV from initial to final volume
for a constant pressure process the integral simplifies to:
W = P â™ â« dV = Pâ™â†V
Enthalpy is defined as:
H = U + Pâ™V
So the change in enthalpy and the change in internal energy are related as:
â†H = â†U + â†(Pâ™V)
for a constant pressure process:
â†H = â†U + Pâ™â†V
Hence,
â†H = â†U + W
=>
W = â†H - â†U
= -5074 kJ - (-5084.2) kJ
= 10.2 kJ</span>
Answer:
The energy stored in the magnetic field of the solenoid is 0.633 mJ.
Explanation:
Given that,
Length = 8.61 cm
Number of turns = 677
Diameter = 1.46 cm
Resistance = 0.684 Ω
emf = 0.728 V
We need to calculate the energy stored in the magnetic field
Using formula of inductance
Where, N = number of turns
A= area
I = Current
Put the value into the formula
We need to calculate the current
Using ohm's law
We need to calculate the stored energy
Using formula of store energy
Put the value into the formula
Hence, The energy stored in the magnetic field of the solenoid is 0.633 mJ.
