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What does the term efficient mean?
if you mean in terms of energy then it refers to a device that transfers more useful energy than it wastes if you mean in terms of energy then it refers to a device that transfers more useful energy than it wastes
Why 40 angle of attack during reentry of spaceshuttle?
An angle of attach of less than 40 degrees would have caused the shuttle to bounce back off the atmosphere - in the same way as stones are skimmed on water.An angle greater than 40 degrees would have resulted in great deal of drag (friction). This would have caused the shuttle's skin to heat up more than the heat-tiles could have managed.An angle of attach of less than 40 degrees would have caused the shuttle to bounce back off the atmosphere - in the same way as stones are skimmed on water.An angle greater than 40 degrees would have resulted in great deal of drag (friction). This would have caused the shuttle's skin to heat up more than the heat-tiles could have managed.An angle of attach of less than 40 degrees would have caused the shuttle to bounce back off the atmosphere - in the same way as stones are skimmed on water.An angle greater than 40 degrees would have resulted in great deal of drag (friction). This would have caused the shuttle's skin to heat up more than the heat-tiles could have managed.An angle of attach of less than 40 degrees would have caused the shuttle to bounce back off the atmosphere - in the same way as stones are skimmed on water.An angle greater than 40 degrees would have resulted in great deal of drag (friction). This would have caused the shuttle's skin to heat up more than the heat-tiles could have managed.
What is a steel rule and what is it used for?
The steel rule is a measuring device. It is used to measure a piece of work such as engineering and is usually used just as if it were nothing more than a regular ruler.
What are the advantages of micrometer?
A micrometer (device) measures distance more accurately with more precision than a vernier or a tape measure. It is much cheaper than using an electron microscope, which can measure, with calibration, a length in the order of 1E-9 meter. A micrometer (unit) is equal to 1E-6 meter.
Was math in WW2?
Math was definitly in WW2. Half of the devices and machines required math. For example, a radar may look like nothing more than a device that pin points enemy locations. However, inside of that device, it gives you distance, degrees and some other mathematical procedures.
