the graph shows the range of frequencies commonly heard by some animals. which animals can hear a sound wave…
the graph shows the range of frequencies commonly heard by some animals. which animals can hear a sound wave that has 18,500 cycles in 0.75 seconds? check all that apply. the range of frequencies commonly heard by some animals porpoise bat moth cat human bird fish cricket snake 0 100 1,000 10,000 100,000 frequency in hz bats moths cats humans birds fish crickets
Answer
Explanation:
Step1: Calculate the frequency
Frequency is the number of cycles per second. Given 18500 cycles in 0.75 seconds, the frequency $f=\frac{18500}{0.75}\approx24667$ Hz.
Step2: Analyze animal - frequency ranges
From the bar - graph:
- Bats can hear frequencies up to about 100000 Hz, so they can hear 24667 Hz.
- Moths can hear frequencies up to about 100000 Hz, so they can hear 24667 Hz.
- Cats can hear frequencies up to about 65000 Hz, so they can hear 24667 Hz.
- Humans can hear frequencies up to about 20000 Hz, so they cannot hear 24667 Hz.
- Birds can hear frequencies up to about 10000 Hz, so they cannot hear 24667 Hz.
- Fish can hear frequencies up to about 1000 Hz, so they cannot hear 24667 Hz.
- Crickets can hear frequencies up to about 5000 Hz, so they cannot hear 24667 Hz.
Answer:
bats, moths, cats