Problemas
Pumping your legs at the right speed to make a swing move is a demonstration of Refraction Resonance Interference Diffraction Doppler Effect
Roztwór
Salma
veterano · Tutor durante 11 años
3.9
(238 Votos)
Respuesta
B. Resonance
Explicación
## Step 1The problem is asking us to identify the physical phenomenon that is demonstrated when you pump your legs at the right speed to make a swing move. The options provided are Refraction, Resonance, Interference, Diffraction, and Doppler Effect.## Step 2Let's analyze each option:### RefractionRefraction is the change in direction of a wave due to a change in its speed. This is most commonly observed when a wave passes from one medium to another. This doesn't apply to the situation of a swing moving.### ResonanceResonance occurs when an object is made to vibrate at its natural frequency by the application of a periodic force having that frequency. In the case of a swing, when you pump your legs at the right speed, you are causing the swing to vibrate at its natural frequency, which is the definition of resonance.### InterferenceInterference is the interaction of waves that results in the combination of two or more electromagnetic or sound waves in such a way that the total effect is a new wave pattern. This doesn't apply to the situation of a swing moving.### DiffractionDiffraction is the spreading of waves as they pass through an aperture or around an obstacle. This doesn't apply to the situation of a swing moving.### Doppler EffectThe Doppler Effect is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source. This doesn't apply to the situation of a swing moving.## Step 3Based on the above analysis, the correct answer is Resonance.