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Identify the apparent temperature when the air temperature is 15 ° F and the wind speed is 45 mph.

Identify the apparent temperature when the air temperature is 15 ° F and the wind speed is 45 mph.

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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Identify the apparent temperature when the air temperature is 15 ° F and the wind speed is 45 mph.
Wind (mph) Calm 40 35 30 25 20 15 5 36 31 25 10 34 27 21 15 32 20 30 25 29 30 28 3.5 28 40 27 45 26 50 26 55 25 18 11 60 25 17 10 953 Wind Chill Chart Temperature (°F) 10 50 -5 -10 15 20 25 30 35 40 45 1 -5 -11 -16 22 -28 -34 -40 -46 52 -57 -63 -4 -10 -16 -22 -7 -13 19 -26 -9 -15 -22 -29 -28 -35 -41 -47 -53 -59 -66 -72 -32 -39 -45 -51 -58 -64 -71 -77 -35 -42 -48 -55 -61 -68 -74 -81 -11 -37 -44 -51 -58 -12 -17 -24 -31 -64 -71 -78 -84 19 -26 -33 -39 -46 -53 -60 -67 -73 -80 -87 -76 -82 -89 -14 -21 -27 -34 -41 -78-84 -91 -48 -55 -62 -69 -15 -22 -29 -36 -43 -50 -57 -64 -71 -44 -51 -58 -65 -72 -45 -52 -60 -67 -74 -81 -88 -95 -16 -23 -30 -37 -79 -86 -93 -17 -24 -31 -38 -46 -54 -61 -68 -75 -82 -85 -97 18 -25 -32 -39 -19 -26 -33 -40 -48 -55 -62 -69 -76 -84 -91 -98 210 19 13 7 25 19 13 6 2 17 11 23 16 9 22 15 8 21 14 7 20 13 6 19 12 19 9 4 3 1 0 S -2 4 4 3 نہ بن بن ط -3 3 MONY 0 -2 -5 -7 -8 -9 -10 -3 -11 -11 10 minutes Frostbite Times Wind Chill (°F) = 35.74 +0.6215T-35.75(V0.16) +0.4275T(V⁰.16) Where, T= Air Temperature (°F) V- Wind Speed (mph) 10 minutes 5 minutes Effective 11/01/01 The NWS Wind Chill Temperature (WCT) Index uses advances in science, technology, and computer modeling to provide an accurate, understandable, and useful formula for calculating the dangers from winter winds and freezing temperatures. The index does the following: • Calculates wind speed at an average height of 5 feet, the typical height of an adult human face, based on readings from the national standard height of 33 feet, which is the typical height of an anemometer . Is based on a human face model . Incorporates heat transfer theory based on heat loss from the body to its surroundings, during cold and breezy/windy days ▪ Lowers the calm wind threshold to 3 mph Uses a consistent standard for skin tissue resistance . Assumes no impact from the sun, i.e., clear night sky.
Transcribed Image Text:Wind (mph) Calm 40 35 30 25 20 15 5 36 31 25 10 34 27 21 15 32 20 30 25 29 30 28 3.5 28 40 27 45 26 50 26 55 25 18 11 60 25 17 10 953 Wind Chill Chart Temperature (°F) 10 50 -5 -10 15 20 25 30 35 40 45 1 -5 -11 -16 22 -28 -34 -40 -46 52 -57 -63 -4 -10 -16 -22 -7 -13 19 -26 -9 -15 -22 -29 -28 -35 -41 -47 -53 -59 -66 -72 -32 -39 -45 -51 -58 -64 -71 -77 -35 -42 -48 -55 -61 -68 -74 -81 -11 -37 -44 -51 -58 -12 -17 -24 -31 -64 -71 -78 -84 19 -26 -33 -39 -46 -53 -60 -67 -73 -80 -87 -76 -82 -89 -14 -21 -27 -34 -41 -78-84 -91 -48 -55 -62 -69 -15 -22 -29 -36 -43 -50 -57 -64 -71 -44 -51 -58 -65 -72 -45 -52 -60 -67 -74 -81 -88 -95 -16 -23 -30 -37 -79 -86 -93 -17 -24 -31 -38 -46 -54 -61 -68 -75 -82 -85 -97 18 -25 -32 -39 -19 -26 -33 -40 -48 -55 -62 -69 -76 -84 -91 -98 210 19 13 7 25 19 13 6 2 17 11 23 16 9 22 15 8 21 14 7 20 13 6 19 12 19 9 4 3 1 0 S -2 4 4 3 نہ بن بن ط -3 3 MONY 0 -2 -5 -7 -8 -9 -10 -3 -11 -11 10 minutes Frostbite Times Wind Chill (°F) = 35.74 +0.6215T-35.75(V0.16) +0.4275T(V⁰.16) Where, T= Air Temperature (°F) V- Wind Speed (mph) 10 minutes 5 minutes Effective 11/01/01 The NWS Wind Chill Temperature (WCT) Index uses advances in science, technology, and computer modeling to provide an accurate, understandable, and useful formula for calculating the dangers from winter winds and freezing temperatures. The index does the following: • Calculates wind speed at an average height of 5 feet, the typical height of an adult human face, based on readings from the national standard height of 33 feet, which is the typical height of an anemometer . Is based on a human face model . Incorporates heat transfer theory based on heat loss from the body to its surroundings, during cold and breezy/windy days ▪ Lowers the calm wind threshold to 3 mph Uses a consistent standard for skin tissue resistance . Assumes no impact from the sun, i.e., clear night sky.
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