The shooter holds a leather-covered baseball for a certain period of time, bringing the outer surface temperature of the ball to 30 ℃. Then the shooter throws the ball at 80 km/h to another athlete standing 18.5 meters away. It is known that the diameter of the ball is 7 cm and the air temperature is 20 ℃. Calculate the total heat transfer from the ball to the ambient air during flight, in Joules, assuming that the outer surface temperature of the ball remains constant throughout the shot. (When finding the properties, find the real values by interpolating. Ignore the air resistance.)
The shooter holds a leather-covered baseball for a certain period of time, bringing the outer surface temperature of the ball to 30 ℃. Then the shooter throws the ball at 80 km/h to another athlete standing 18.5 meters away. It is known that the diameter of the ball is 7 cm and the air temperature is 20 ℃. Calculate the total heat transfer from the ball to the ambient air during flight, in Joules, assuming that the outer surface temperature of the ball remains constant throughout the shot. (When finding the properties, find the real values by interpolating. Ignore the air resistance.)
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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The shooter holds a leather-covered baseball for a certain period of time, bringing the outer surface temperature of the ball to 30 ℃. Then the shooter throws the ball at 80 km/h to another athlete standing 18.5 meters away. It is known that the diameter of the ball is 7 cm and the air temperature is 20 ℃. Calculate the total heat transfer from the ball to the ambient air during flight, in Joules, assuming that the outer surface temperature of the ball remains constant throughout the shot. (When finding the properties, find the real values by interpolating. Ignore the air resistance.)
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