Answer:
Sound energy is produced when an object vibrates. The sound vibrations cause waves of pressure that travel through a medium, such as air, water, wood or metal. Sound energy is a form of mechanical energy.
Explanation:
Answer:

Explanation:
We know that speed is given by dividing distance by time or multiplying length and frequency. The speed of the father will be given by Lf where L is the length of the father’s leg ad f is the frequency.
We know that frequency of simple pendulum follows that 
Now, the speed of the father will be
while for the child the speed will be 
The ratio of the father’s speed to the child’s speed will be

Answer:
Line the numbers from smallest to largest the subtract the smallest from the largest numbers.
The resistance (R) of the circuit is 707.1 ohms and the inductance (L) is 0.032 H.
<h3>Resistance of the circuit</h3>
For the phase constant of 45⁰, impedance is equal to the resistance of the circuit.

<h3>Resonant frequency</h3>

<h3>At driven frequency</h3>

<em>solve 1 and 2 together</em>

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