13 reputation
5
bio website
location
age
visits member for 1 year, 6 months
seen Jan 8 at 15:02

Dec
22
awarded  Popular Question
Sep
18
accepted Does speed of writing data on an optical disk affect the speed of reading data?
Sep
9
comment Does speed of writing data on an optical disk affect the speed of reading data?
I think it is related to physics because of this topic reading data from disk is related to light reflection and writing data on it is related to lasers and the substance used in the disk ,I want to know the role of speed of writing in the game , may higher speed make the laser to create worse pits and lands and why?
Sep
8
asked Does speed of writing data on an optical disk affect the speed of reading data?
Jun
5
accepted how datas are physically stored in and read from hard drives?
Jun
3
revised how datas are physically stored in and read from hard drives?
edited body
Jun
3
asked how datas are physically stored in and read from hard drives?
Feb
19
awarded  Scholar
Feb
19
accepted The direction of friction for a car wheel
Feb
18
comment The direction of friction for a car wheel
I'm agree with all you wrote . As you said " friction is the force on a surface that will oppose the motion of the object" and " friction opposes this and points to the left" , then it must point to left but the picture in the book shows vice versa , the friction is pointed to right in the same direction as the care moves.
Feb
18
comment The direction of friction for a car wheel
I meant "Is it always true that a car (that gets it's moving force from engine) when moves onto the road, the direction of friction is parallel to the direction of motion?" Thanks again
Feb
18
comment The direction of friction for a car wheel
thanks for your answer but i'm not completely convinced. You mean if a car is moving on such a road then the friction is not in the opposite point but why? and what kind of friction is it?
Feb
17
awarded  Editor
Feb
17
revised The direction of friction for a car wheel
added 174 characters in body; edited tags
Feb
17
awarded  Custodian
Feb
17
reviewed Approve suggested edit on The direction of friction for a car wheel
Feb
17
awarded  Student
Feb
17
asked The direction of friction for a car wheel