<span>
</span><span>Waves on a pond are an example of which kind of wave?
</span>B. surface waves
Answer:
Blue Lighting
Explanation:
In order to make red look black, you must use blue light. The blue would be absorbed and there would be no red light to reflect.
Answer:
The ratio of the amplitudes of the two waves is .
Explanation:
The intensity of the spherical wave has the formula as:
Here, P is power and r is the radius of sphere.
Power is equivalent to the ratio of energy and time and intensity is directly proportional to energy. So,
=
Here, and are the intensities of the two waves, and are the amplitudes of the two waves
The total energy of the sinusoidal wave can be calculated by using the formula,
=
Here, k is wave number and A is the amplitude of wave.
From the above equation, energy is directly proportional to the squared amplitude,
=
Since the energy of one earth quake is twice the energy of other earth quake. Thus,
= 2
Rearrange the equation for ,
=
The ratio of amplitudes is .