RADAR range is measured by the constant:

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🔍 Key Concepts

• Speed of radio waves in air/vacuum is approximately the same as the speed of light • Basic distance-speed-time relationship: Distance = Speed × Time • How many feet or meters a radar pulse travels in one microsecond, and that range is based on one-way distance (out OR back) even though the pulse travels round-trip

💭 Think About

• First convert the speed of light (about 3×10^8 m/s) into distance traveled in one microsecond. What does that give you in meters and in yards? • Remember the radar pulse travels out and back. The time on the display corresponds to the round trip, but range is the one-way distance. How does that affect the constant? • Compare your calculated distance per microsecond to each option. Which unit (meters or yards) and which magnitude is closest to the physics you just worked out?

✅ Before You Answer

• Verify your unit conversions: 1 microsecond = 10^-6 seconds; 1 yard ≈ 0.9144 meters • Check whether the answer choices are using one-way distance or round-trip distance for the constant used in marine radar calculations • Confirm that your final constant is in distance per microsecond, not per millisecond or per second

🔍 Key Concepts

💭 Think About

✅ Before You Answer