A normal dose of caffeine is about 50 mg to 200 mg. Caffeine works best when you take it on an intermittent, off-and-on basis. Higher doses can have much more potent effects. A dose of 500 mg or 600 mg of caffeine can affect you much like a low dose of an amphetamine.
This means the 25,300 American engineers employed in this field earned an average hourly wage of $43.90. The bottom ten percent earns as low as $53,120, while the top ten percent of materials engineers earn as much as $144,720 every year. Embed This Image On Your Site(copy code below):
How much does a mechanical engineer make? The U.S. Bureau of Labor Statistics (BLS) reports that in 2012, the median mechanical engineer salary was $38.74 an hour, or about $80,500 a year.According to the BLS, most mechanical engineers work full time, though some work in excess of 60 hours a week.he U.S. Bureau of Labor Statistics (BLS) reports that in 2012, the median mechanical engineer salary was $38.74 an hour, or about $80,500 a year.