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? According to the BLS, mechanical engineers earned a median salary of $84,190 in 2016. The best-paid earned about $131,350, while the lowest-paid earned less than $54,420. Industries that pay well include oil and gas extraction as well as software publishers. 75th Percentile: $106,420