In biology, a vector is a disease-carrying organism, such as a mosquito or a bat, that is itself not infected with the disease. One such disease, West Nile Virus, is spread primarily by migratory birds. The figure below shows the spread of the virus across the continental United States from 1999 to 2004. Minneapolis 2002 1 550 mi 1 500 mi A San Diego 2004 New York 1999 south of west 1 100 mil Miami 2001 Ⓡ West Nile Virus was first detected in New York in 1999. Two years later, the virus had spread to Miami, a distance of 1,100 miles at a direction of 7.00° west of south from New York. In 2002, the virus was found in Minneapolis, 1,500 miles at a direction 37.0° west of north from Miami. Finally, the virus arrived in San Diego in 2004, a distance of 1,550 miles at a direction 25.0° south of west. (a) What is the net displacement (in mi) of the virus from 1999 to 2004? (Give the direction in degrees south of west, rounded to at least three significant figures.) mi magnitude direction (b) What is the average speed (in mi/h) of the spread of the virus from New York to San Diego during this time? mi/h
In biology, a vector is a disease-carrying organism, such as a mosquito or a bat, that is itself not infected with the disease. One such disease, West Nile Virus, is spread primarily by migratory birds. The figure below shows the spread of the virus across the continental United States from 1999 to 2004. Minneapolis 2002 1 550 mi 1 500 mi A San Diego 2004 New York 1999 south of west 1 100 mil Miami 2001 Ⓡ West Nile Virus was first detected in New York in 1999. Two years later, the virus had spread to Miami, a distance of 1,100 miles at a direction of 7.00° west of south from New York. In 2002, the virus was found in Minneapolis, 1,500 miles at a direction 37.0° west of north from Miami. Finally, the virus arrived in San Diego in 2004, a distance of 1,550 miles at a direction 25.0° south of west. (a) What is the net displacement (in mi) of the virus from 1999 to 2004? (Give the direction in degrees south of west, rounded to at least three significant figures.) mi magnitude direction (b) What is the average speed (in mi/h) of the spread of the virus from New York to San Diego during this time? mi/h
College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Introduction
Section: Chapter Questions
Problem 31P: (a) About how many microorganisms are found in the human intestinal tract? (A typical bacterial...
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