While navigating in fog off a coastline of...

While navigating in fog off a coastline of...

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Question 1 of 2066636ee928f7522a1c519c95

While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships fog horn 2 1/2 seconds after the signal was sounded. What is the distance to the shore?

Question 1 of 20

66636ee928f7522a1c519c95

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While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships fog horn 2 1/2 seconds after the signal was sounded. What is the distance to the shore?

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🔍 Key Concepts

• Speed = Distance / Time relationship for sound • Approximate speed of sound in air in feet per second • Remember the sound travels to the cliff and back (round trip)

💭 Think About

• First, estimate how far sound travels in 1 second, then scale it to 2.5 seconds. • Think about whether the 2.5 seconds is for one-way travel to the cliff or for the round trip (out and back). • After finding the total distance sound traveled, decide what you must do to get the one-way distance to the shore.

✅ Before You Answer

• Use a reasonable value for the speed of sound in air in feet per second (don’t use knots or mph). • Convert feet to yards correctly before matching the answer choices. • Make sure you divide by 2 at the right step to account for the echo (round trip) distance.

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