A uniform electric field exists in which of the following regions? I. Around an infinite line of uniform linear charge density.
II. On either side of an infinite thin sheet of uniform charge density.
III. Between the spherical shells of a charged spherical capacitor.

a. I only
b. Il only
c. Ill only
d. II and III only
e. I, II and III

electric field formed we see that the field is uniform only for a sheet of uniform charge, so the correct answer is b

Explanation:

Let's analyze the shape of the electro field in each given configuration

i) a charge line.

   Using Gauss's law the field varies inversely with the distance

          E = 2K λ / r

ii) an infinite leaf. the electric field is

         E = σ / 2ε₀

iii) two spherical shells

in this case the charge can be considered centered in the center of each shell and the electric field is

         E = k q / r²

for each shel linterior

The outer shell does not create an electric field in the space between them

When examining each electric field formed we see that the field is uniform only for a sheet of uniform charge, so the correct answer is b

c. 7/3

step-by-step explanation:

a rational number is like pi- it is a repeating decimal.

a. is -1.8

b. 2.236068

c. 2.3333333333333333333

d.   is 3

i hope that ! =)

  the grams     of oxygen gas   that can be produced     is 20.6   grams of o₂

calculation

2liclo₃ →   2 licl + 3 o₂

step 1:   find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5   +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281   moles

step 2:   use the   mole ratio   to calculate the moles of o2

from equation above, liclo₃: o₂   is 2: 3  

therefore the moles of   o₂=0.4281 moles x3/2 =0.6422   moles

step 3: find mass   of o₂

mass= moles x molar mass

from periodic table the   molar mass of   o₂ = 16 x2= 32 g/mol

mass=0.6422   moles   x   32 g/mol = 20.6 grams of o₂