Calculate the number 5109
[8210] Calculate the number 5109 - NUMBERMANIA: Calculate the number 5109 using numbers [3, 5, 6, 1, 22, 533] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 0
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Calculate the number 5109

NUMBERMANIA: Calculate the number 5109 using numbers [3, 5, 6, 1, 22, 533] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
#brainteasers #math #numbermania
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Longitude and latitude

The teacher of the Earth Science class was lecturing on map reading.

He spent the class explaining about latitude, longitude, degrees, and minutes. Towards the end of class, the teacher asked his students, "Suppose I asked you to meet me for lunch at 23 degrees, 4 minutes north latitude and 45 degrees, 15 minutes east longitude..."

A student's voice broke the confused silence, and volunteered, "I guess you'd be eating alone, sir."

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Hydrogen-cooled generator

In 1941, the first hydrogen-cooled electrical generator for outdoor installation in the U.S. was put into operation. Built by the General Electric Company for the city of Glendale, Cal., it was rated 20,000 kW and cost $391,669. It was mounted on an open deck. (The first GE-built, hydrogen-cooled indoor generator started operation started on 12 Oct 1937). In modern hydrogen-cooled turbo-generators, hydrogen is used as a coolant fluid. The stator core is direct cooled with hydrogen, for example, at a pressure of 3-6 bar. The advantage of hydrogen is a high thermal conductivity and lower friction than air-cooled generators, thus more efficient operation, lower fuel consumption, highest output capacity, and lowest operating cost.*
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