two disks(one radius is R,the other radius is 2R) and a flat ring (inner radius is R,outterradius is 2R) each with the same uniform charge Q.Rank the objects according to the magnitude of the electric field they creat ar point P.(P is above the disks

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two disks(one radius is R,the other radius is 2R) and a flat ring (inner radius is R,outterradius is 2R) each with the same uniform charge Q.Rank the objects according to the magnitude of the electric field they creat ar point P.(P is above the disks

two disks(one radius is R,the other radius is 2R) and a flat ring (inner radius is R,outterradius is 2R) each with the same uniform charge Q.Rank the objects according to the magnitude of the electric field they creat ar point P.(P is above the disks
two disks(one radius is R,the other radius is 2R) and a flat ring (inner radius is R,outter
radius is 2R) each with the same uniform charge Q.Rank the objects according to the magnitude of the electric field they creat ar point P.(P is above the disks and ring,at the same level)

two disks(one radius is R,the other radius is 2R) and a flat ring (inner radius is R,outterradius is 2R) each with the same uniform charge Q.Rank the objects according to the magnitude of the electric field they creat ar point P.(P is above the disks
电场强度与电荷密度有关,电荷密度越大,电场强度也越大
电荷密度跟物体的表面积有关,表面积越小,电荷密度越大
设盘的表面积为上面积与下面积之和即S=(πR^2)*2
R:S1=2πR^2
2R:S2=2(π(2R)^2)=8πR^2
ring:S2=2(π(2R)^2-πR^2)=6πR^2
所以电场强度排列为 ER>Ering>E2R

two disks(one radius is R,the other radius is 2R)and a flat ring (inner radius is R,outter radius is 2R) each with the same uniform charge Q.Rank the objects according to the magnitude of the electric field they creat ar point P.(P is above the disks two disks(one radius is R,the other radius is 2R) and a flat ring (inner radius is R,outterradius is 2R) each with the same uniform charge Q.Rank the objects according to the magnitude of the electric field they creat ar point P.(P is above the disks one of your disks needs to be checked for consistency. The two centers of identical circles are separated by a distance of 17 cm and the radius of one of the circle is 5 cm. one two one two 1）The sum of the area s of two circles is 65pi square feet.The length of a radius of the larger circle is one foot less than twice the length of the radius of the smaller circle.Find the length of a radius of each circle.2) The combined area of a s a level的数学1.The first diagram shows two circles each of radius 6 centimetres,one centred at A and the other at B.这句话翻译一下 One of your disks needs to be checked for consistency.You 很劲爆one two one two three four One plus one equals two. one and one is two One of your disks needs to be checked for consistency.You停在这不动了,怎么解决 开机出现英文字母：The type of the file system is NTFS one of your disks needs to... one or two ONE TWO THREE GO in one or two one or two THREE TWO ONE怎么样