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by BlastRoom
Practice identifying resonance as efficient energy transfer at a system's natural frequency.
#physics
20 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.
The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
Use the response curve. At what driving frequency is the amplitude greatest?
A periodic driver makes an object vibrate with a much larger amplitude than usual. Which match produces resonance?
A parent gives a swing a small push every time it returns to the same point in its motion, and the swing rises higher. Why does the amplitude grow?
Use the response curve. What is the peak amplitude of the oscillator?
Two identical tuning forks sit near each other. One is struck, then stopped by hand, but the other fork keeps sounding. What caused the second fork to vibrate?
Which statement best defines an object's natural frequency?
Use the response curve. What is the system's natural frequency?
A loudspeaker plays a tone near a thin glass. The glass vibrates strongly only at one pitch. Which explanation is correct?
A 0.60 m pendulum is tapped by a motor. For small swings, T = 2π√(L/g); take g = 9.8 m/s². Which tapping frequency makes the swing build most?
In a resonance curve for a driven oscillator, what happens as the driving frequency moves far above or far below the natural frequency?
Use the response curve. What is the peak amplitude?
A student raises and lowers water in a tube while holding a vibrating tuning fork above it. At one air-column length the sound becomes much louder. What is happening?
A cart on a spring has mass 0.50 kg and spring constant 200 N/m. For SHM, f = (1/2π)√(k/m). What driving frequency produces the largest response?
Which driving strategy transfers energy most efficiently to a lightly damped oscillator?
Use the response curve. At what driving frequency does resonance occur?
A radio tuner is adjusted until one station comes in clearly while nearby stations are weak. Which idea explains the selected station?
An oscillator has angular frequency ω = 18.0 rad/s and T = 2π/ω. What driving frequency should a motor use for resonance?
A driver is exactly at resonance but the force amplitude is not very large. What can still be true of the oscillator's motion?
Use the response curve. What amplitude does the system reach at its strongest response?
Three pendulums hang from the same support. One is set swinging, and only the pendulum with the same length begins a large motion. Why that one?
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.
Pick a tile, answer, hit bonuses and steals.
Sound
40 questions
