1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
valina [46]
3 years ago
11

An infinite line charge of linear density λ = 0.30 µC/m lies along the z axis and a point charge q = 6.0 µC lies on the y axis a

t y = 2.0 m. The electric field at the point P on the x axis at x = 4.0 m is approximately.a. (4.2 kN/C) b. (4.2 kN/C) i + (0.64 kN/C) j c. (-0.96 kN/C) j d. (2.8 kN/C) i + (0.64 kN/C) j e. (5.2 kN/C) i = (2.3 kN/C) j
Physics
1 answer:
vitfil [10]3 years ago
6 0

Answer:

E_{net} = (3.765\hat i - 1.207\hat j)kN/C

Explanation:

Electric field due to long line charge on position of charge at x = 4 m is given as

E = \frac{2k\lambda}{r} \hat i

so we have

\lambda = 0.30 \mu C/m

now we have

E = \frac{2(9\times 10^9)(0.30 \mu C/m)}{4}

E = 1350 N/C

Now electric field due to the charge present at y = 2.0 m

E = \frac{kq}{r^2} \hat r

E = \frac{(9\times 10^9)(6 \times 10^{-6})}{2^2 + 4^2}\times \frac{4\hat i - 2\hat j}{\sqrt{4^2 + 2^2}}

E = 603.7 ( 4\hat i - 2\hat j)

E = 2415\hat i - 1207.5 \hat j

Now total electric field is given as

E_{net} = (1350\hat i) + (2415\hat i -1207.5\hat j)

E_{net} = 3765\hat i - 1207.5 \hat j

E_{net} = (3.765\hat i - 1.207\hat j)kN/C

You might be interested in
What is the equation for the potential energy stored in a spring when it is stretched or compressed?
gregori [183]

Answer:

if you stretch a spring with k = 2, with a force of 4N, the extension will be 2m. the work done by us here is 4x2=8J. in other words, the energy transferred to the spring is 8J. but, the stored energy in the spring equals 1/2x2x2^2=4J (which is half of the work done by us in stretching it).

8 0
3 years ago
In concave lenses a Distance object appears ​
JulsSmile [24]

Answer:

it appears to be farther away than it actually is, and therefore smaller then the object itself.

4 0
2 years ago
Please I need help on this
Alexxandr [17]
Number 4 I think
the atomic mass is 11 because the mass is the sum of protons and neutrons
3 0
3 years ago
What are the three points of the fire triangle
prisoha [69]
1-fuel
2-heat
3-oxygen
5 0
3 years ago
For a given velocity of projection in a projectile motion, the maximum horizontal distance is possible only at ө = 45°. Substant
myrzilka [38]

First let us imagine the projectile launched at initial velocity V and at angle θ relative to the horizontal. (ignore wind resistance)

Vertical component y:

The initial vertical velocity is given as Vsinθ
The moment the projectile reaches the maximum height of h, the vertical velocity will be 0, therefore the time t taken to attain this maximum height is:

h = Vsinθ - gt
0 = Vsinθ - gt
t = (Vsinθ)/g

where g is  acceleration due to gravity

Horizontal component x:
The initial horizontal velocity is given as Vcosθ. However unlike the vertical component, this horizontal velocity remains constant because this is unaffected by gravity. The time to travel the horizontal distance D is twice the value of t times the horizontal velocity.
D = Vcosθ*[(2Vsinθ)/g] 
D = (2V²sinθ cosθ)/g 
 D = (V²sin2θ)/g

In order for D (horizontal distance) to be maximum, dD/dθ = 0
That is,

2V^2 cos2θ / g = 0
And since 2V^2/g must not be equal to zero, therefore cos(2θ) = 0
This is true when 2θ = π/2  or  θ = π/4


Therefore it is now<span> shown that the maximum horizontal travelled is attained when the launch angle is π/4 radians, or 45°.</span>

6 0
3 years ago
Other questions:
  • Express 9/15 as a percentage
    5·2 answers
  • An engine draws energy from a hot reservoir with a temperature of 1250 K and exhausts energy into a cold reservoir with a temper
    5·1 answer
  • S= 1/2(V f + V I )t solve for V f <br><br> show me how
    6·1 answer
  • A parallel-plate capacitor is charged by connecting it to a battery. After that the capacitor is disconnected from the battery a
    5·1 answer
  • If two negative charges of -2 C and -2 C are put 32,692 m apart from each other how much force will push them apart?
    8·1 answer
  • How does the mass of and distance between the Sun and the Earth impact the number of days in a year?
    8·1 answer
  • Imagine that person B is more massive than person A in the picture above.
    12·1 answer
  • HELP QUICK: A pilot performs a vertical maneuver around a circle with a radius R. When the
    12·1 answer
  • Which coefficient is needed in front of NaNO3 to balance the equation Na2S + Zn(NO3)2 → ZnS + _NaNO3? 1, 2, 5, 7,
    15·1 answer
  • Which of the following is true of ligand gated sodium ion channels neurons?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!