As many other devices it depends on the time of use... for example: a regular pencil sharpener as the Panasonic KP380 load is tagged 70W. If a pencil is about 7.5 inches length and each sharpen process takes about 1/2 inches, this means you will have to use it about 15 times in the lifetime of the pencil. Each time lasts about 4 to 5 seconds. For each pencil you need 75 sec (.02083 hrs) . Power usage is (70w)x(0.20833) = 1.45 Wh / pencil. or 0.00145 KWh/pencil
52 kilowatts per hour
the average is between 20 and 30
approx. you have to use the force of 5.2 to break a pencil
you cant measure a pencil in milliliters. how about grams?
The main body of the pencil is made from soft wood which is naturally boyant, the pencil 'lead' is not lead at all but a much lighter substance called graphite. Your pencil is just not heavy enough to sink.
If we assume that you are using a 120V electric pencil sharpener, then it uses approximately 100 Watts. Over a ten hour period of constant use, that would add up to 1 kWh.
$25.00
$13.33
Pretty much anything that uses electricity to run and has moving parts is this conversion. An example of this is a car, or a blender.
the basic Boston pencil sharpeners are really very simple you have a pretty much simple ring and pinion system the pinion (motor)spins at 15 revolutions to 1 revolution of the ring (sharpener) to turn said sharpener
use a knife use a knife
You sharpen the pencil to put a point on it. Before sharpeners and when pencil wood was much thicker, men cut (whittled) the wood with a knife to make the point.
John Lee Love is credited with inventing the portable pencil sharpener in 1897, but he did not receive any awards for it during his lifetime. His contribution to the pencil sharpener design was significant, though he did not achieve great recognition or accolades during his time.
Look for the manufacture's nameplate on the device there is should tell you the wattage of the device.
Pencil sharpeners affect lives by making it much easier to sharpen pencils than in the past. Pencils used to be sharpened with knives, which didn't always have uniform results.
First off, you should check to see if it is a mechanical pencil or not. If it a regular pencil the fix will be much easier. Just find a pencil sharpener, stick the pencil in, and hold it there until it's sharp. If you don't have a sharpener, you could go to any office supplies store and buy one (prices range from $2 to $172). If you don't have a car, and can't secure a ride there, then you should pull out a pocketknife and cut back the wood surrounding the lead. If all else fails, then break the pencil in half and get a new one. If it is a mechanical pencil, the only logical fix is to get a new pencil. You can find them in the same stores as the sharpeners.
h does electricity cost per kilowatt hour at wales?