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VARVARA ORLOVA
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What is the difference between surface area and area?
Area is usually pertaining to the area of a 2d object but surface is 3d object
The number of square units needed to cover a surface?
That depends on the surface and the units, but the surface area tells us that infomation.
Number of square units in a surface?
is called its area.
What is the functions of plicae circulares?
The plicae circulares slow down the food passing along the intestines. Because of their shape there is an increase in the surface area between the food and the walls on the intestines which allows more efficient absorption of nutrients from the chyme - the stuff that comes from the stomach.
How was trigonometry used in the construction of the pyramids of Egypt?
Obviously, the pyramids have a lot to do with triangles. To find the hight, length, width, volume, angle of ascent, and surface area of the pyramids, the egyptians had to use trigonometry.
What is the surface area of circular disk?
If r is the radius of the disc, then pi*r2 square units.
When a contracting hot ball of gas spins into a disk shape it cools faster due to?
increased surface area
Does the read write heads on a hard disk drive actually touch the surface of the disk?
no, the head not touching the surface of the hard disk. If it touch the great chance of data may be lost. only the head of floppy disk is touch the surface of the disk.
What forms circles on the surface of a hard disk?
Tracks form circles on the surface of a hard disk
Why are red blood cells disc shape?
To optimise the surface area available for the bonding of oxygen and haemoglobin, to form oxyhaemaglobin. Individuals with sickle cell anaemia, i.e. those with red blood cells which are not disk shaped have a reduced capacity to carry oxygen in their blood.
Concentric circles on the disk surface?
Concentric circles, are circles within circles. Each concentric circle on the surface of a disk represents a track, the narrower the circle is, the more data can be stored on the disk.
Use magnetic particles to store items on a disk surface?
magnetic disk
A hard drive or floppy disk is composed of tracks which are concentric circles on the disk surface?
true
Can a hard disk involve the use of a laser beam to read data from a disk surface?
yes
What is the surfqace area of a cylinder?
It is the surface area of the two ends plus the surface area of the curved surface. Surface area of each end is pir2 Surface area of the curved surface is 2pirh Total surface area = 2pir2 + 2pirh
What is the process of mapping a magnetic disk's surface?
Polarizing
What is the surface area is the sum of the areas of all the surfaces of a three dimensional object called?
The total surface area! The total surface area! The total surface area! The total surface area!
