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
ankoles [38]
3 years ago
6

To understand the electric potential and electric field of a point charge in three dimensions Consider a positive point charge q

, located at the origin of three-dimensional space. Throughout this problem, use k in place of 14?
Physics
1 answer:
Liula [17]3 years ago
5 0

Answer:

The magnitude of the electric field at distance r from the point charge q is \dfrac{kq}{r^2}

Explanation:

Suppose, Find E(r), the magnitude of the electric field at distance r from the point charge q.

We know that,

The electric field is proportional to the point charge and inversely proportional to the square of the distance from the charge point .

In mathematically,

E=\dfrac{kq}{r^2}

Where, q = charge point

R = distance from charge point

Hence, The magnitude of the electric field at distance r from the point charge q is \dfrac{kq}{r^2}

You might be interested in
What does vf stand for<br> a.fringe velocity<br> b.first velocity<br> c.final velocity
Elza [17]
The correct answer is C. Final Velocity

Hope this helped!
5 0
2 years ago
If the magnitude of the electric field in air exceeds roughly 3 ✕ 106 n/c, the air breaks down and a spark forms. for a two-di
Vlad1618 [11]

Answer: 39.8 μC

Explanation:

The magnitude of the electric field generated by a capacitor is given by:

E = \frac{V}{d}

d is the distance between the plates.

For a capacitor, charge Q = CV where C is the capacitance and V is the voltage.

C =\frac{\epsilon_o A }{d}

where A is the area of the plate and ε₀ is the absolute permittivity.

substituting, we get

E = \frac{Q}{\epsilon_o A}

It is given that the magnitude of the electric field that can exist in the capacitor before air breaks down is, E = 3 × 10⁶ N/C.

radius of the plates of the capacitor, r = 69 cm = 0.69 m

Area of the plates, A = πr² = 1.5 m²

Thus, the maximum charge that can be placed on disks without a spark is:

Q = E×ε₀×A

⇒ Q = 3 × 10⁶ N/C × 8.85 × 10⁻¹² F/m × 1.5 m² = 39.8 × 10⁻⁶ C = 39.8 μC.

8 0
3 years ago
Air trapped in the fur of the caribou’s coat functions as _____.
ioda
It functions as insulation, to keep it warm 
5 0
3 years ago
Read 2 more answers
For a block to move down an inclined plane what force has to be the greatest?
Hatshy [7]

Answer:

D) True. This is what creates the body weight

Explanation:

Let's write Newton's second law for this case. For inclined planes the reference system takes one axis parallel to the plane (x axis) and the other perpendicular to the plane (y axis)

X axis

          Wx -fr = ma

Y Axis

          N - Wy = 0

With trigonometry we can find the components of weight

          sin θ = Wₓ / W

         cos θ = W_{y} / W

         Wₓ = W sin θ

          W_{y} = W cos θ

        W  sin θ - fr = ma

From this expression as it indicates that the body is descending the force greater is the gravity that create the weight of the body

Let's examine the answers

A False This force does not apply because it is not a spring

B) False. It is balanced at all times with the component (Wy) of the weight

C) False. For there to be a rope, if it exists you should be less than the weight component for the block to lower

D) True. This is what creates the body weight

E) False. The cutting force occurs for force applied at a single point and gravity is applied at all points

5 0
3 years ago
what recommendations would you make to local officials regarding the types of resources that could be used to generate electrici
Darina [25.2K]
Solar wind and water
8 0
3 years ago
Other questions:
  • . A water balloon is thrown horizontally at a speed of 2.00 m/s from the roof of a building that is 6.00m above the ground. At t
    8·2 answers
  • At approximately what wavelength of the continuous spectrum will the greatest (maximum) intensity occur when 60-kV electrons str
    10·1 answer
  • How do I identify the symbols used for positive and negative charge
    9·1 answer
  • a student sees a newspaper ad for an apartment that has 1330 square feet of floor space how many square meters are there?
    9·1 answer
  • What is one advantage the Hyperloop would have over other types of transportation?
    14·2 answers
  • 11. Hans and Frans are two workers being considered for a job at the UPS loading dock. Hans boasts that he can lift a 100 kg box
    11·1 answer
  • Which of Newton's laws explains why your hands get red when you press them hard against a wall? A. Newton's law of gravity B. Ne
    15·2 answers
  • If you place a free electron and a free proton in the same electric field, how will the forces acting on them compare? 82. How w
    14·1 answer
  • HELP THIS IS DUE IN 5 MINUTES!!!!!!!!!!!! WILL GIVE BRAINLIEST
    8·1 answer
  • In the circuit below, lamps P and Q are identical. The reading on the ammeter is 3A. The cell shown is of
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!