# If an ovens temperature increases by 50 degrees Fahrenheit how many min will it take to preheat the oven 0 degrees Fahrenheit to 30 degrees Fahrenheit?

1923 and was invented by Micheal FaradayThe first refrigeration machine using vapour was invented by Oliver Evans in 1805.It was invented in 1947.

http://wiki.answers.com/Q/If_an_ovens_temperature_increases_by_50_degrees_Fahrenheit_ho...

## What timing is 425 degrees Fahrenheit for 10 minutes in fan ovens?

## Can you pour concrete in a temperature of 32 degrees Fahrenheit?

You should not pour concrete at a temperature of 32 degrees Fahrenheit. The strength that concrete develops as it sets is sensitive to temperature. According to Ready Mixed Concrete, if the tempera...
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http://www.answerbag.com/q_view/2128835

## What is the windchill factor if the temperature is 15 degrees fahrenheit&the wind speed is 30?

According to the National Weather Service's Windchill Index, the windchill temperature is -5 degrees Fahrenheit if the air temperature is 15 degrees Fahrenheit and the wind speed is 30 miles per ho...
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http://www.answerbag.com/q_view/2395048

## How to Change 74 Degrees Fahrenheit Into Degrees Centigrade?

Conversion from Fahrenheit to Centigrade, also known as Celsius, is a simple task, provided that you can remember the correct formula. The two conversion formulas between the temperature scales are...
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http://www.ehow.com/how_8220001_change-degrees-fahrenheit-degrees-centigrade.html