To convert time to just minutes: 1  2 hours is 2 hours * (60 minutes / 1 hour) = 2 * 60 minutes = 120 minutes. 2  45 minutes is 45 minutes * (1 minute / 1 minute) = 45 * 1 minutes = 45 minutes. 3  45 seconds is 45 seconds * (1 minute / 60 seconds) = 45/60 minutes = 0.75 minutes.
The average mechanical engineer in the United States earned $38.74 per hour, which comes to $80,580 per year as of 2009. The BLS reported earnings of $49,730 for lowest-earning tenth percentile and $117,550 at the top or 90 percentile level, a difference of over $67,000 per year.*.
Engineering Salaries. Once an engineer moves out of the intern position, salaries can jump substantially. However, salaries vary considerably by field and may be a consideration when finding an intern position. The U.S. Bureau of Labor Statistics provides 2008 salary information for the different fields. The highest average salary is a petroleum engineer at $108,020 a year, followed by computer hardware engineers at $97,400 a year. On the lower end are agricultural engineers at $68,730 a year and $72,490 for some health and safety positions.