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
Ira Lisetskai [31]
3 years ago
6

The strength of the electric field at a certain distance from a point charge is represented by E. What is the strength of the el

ectric field at twice the distance from the point charge?
A) At twice the distance, the strength of the field is E/2.B) At twice the distance, the strength of the field is 2E.C) At twice the distance, the strength of the field is 4E.D) At twice the distance, the strength of the field remains equal to E.E) At twice the distance, the strength of the field is E/4.
Physics
1 answer:
Nana76 [90]3 years ago
7 0

Answer:

E

Explanation:

Using Coulomb's law equation

Force of the charge = k qQ /d²

and E = F/ q

substitute for F

E = ( K Qq/ d² ) / q

q cancel q

E = KQ / d²

so twice  the distance of the from the point charge will lead to the E ( electric field ) decrease by a 4 = E/4. E is inversely proportional to d²

You might be interested in
Which chemical reaction absorbs energy?
andre [41]
Photosynthesis. Photosynthesis is the process the plant uses to absorbs light to make food
8 0
3 years ago
Read 2 more answers
Where does energy come from that fuels our physical activity
joja [24]

Energy comes from the Sun, plants and animals that we eat, to provide us with nutrients we need for energy.


7 0
3 years ago
Read 2 more answers
At a hot air balloon race, a person on the ground shots a ball of confetti from a cannon to start the race. One of the balloons
Sati [7]

Answer:

a) The balloon and the ball will meet after 1.43 s.

b) The ball will reach the balloon at 15.7 m above the ground.

Explanation:

The height of the confetti ball is given by the following equation:

y = y0 + v0 · t + 1/2 · g · t²

Where:

y = height of the ball at time t

y0 = initial height

v0 = initial velocity

g = acceleration due to gravity (-9.8 m/s² considering the upward direction as positive).

The height of the ball is given by this equation:

y = y0 + v · t

Where v is the constant velocity.

When the ball and the ballon meet, both heights are equal. Let´s consider the ground as the origin of the frame of reference so that y0 = 0:

y balloon = y ball

y0 + v · t = y0 + v0 · t + 1/2 · g · t²                  (y0 = 0)

11 m/s · t = 18 m/s · t -1/2 · 9.8 m/s² · t²

0 = -4.9 m/s² · t² + 18 m/s · t - 11 m/s · t

0 = -4.9 m/s² · t²  + 7 m/s · t

0 = t( -4.9 m/s² · t  + 7 m/s)

t = 0 and

0 = -4.9 m/s² · t  + 7 m/s

-7 m/s / - 4.9 m/s² = t

t = 1.43 s

They will meet after 1.43 s

b) Now let´s calculate the height of the balloon after 1.43 s

y = v · t

y = 11 m/s · 1.43 s = 15.7 m

The ball will reach the balloon at 15.7 m above the ground.

7 0
3 years ago
A car has a mass of 550 kg. What is the weight of the car?
lozanna [386]
1212.54 is what 550 kgs is equal to the weight of the car
3 0
3 years ago
Read 2 more answers
When mapping the equipotentials on the plates with different electrode configurations you may find that some have significant ar
Olenka [21]

Answer:

v = 10 V and E = 2 10³ N/C

Explanation:

The electrical potentials and the electric field at one point are related by the expression

            ΔV = - ∫ E. dS

Where the bold indicates vector quantities, E is the electric field and S is the line of displacement of the load, in general displacement is perpendicular to the equipotential lines, which reduces the product scales to the ordinary product.

 If the potential difference is the most usual that is V = 10 V, the electric field is

   s = 0.5 cm = 0.5 10⁻² m

                E = ΔV / S

                E = 10/0.5 10⁻²

                 E = 2 10³ N / C

4 0
3 years ago
Other questions:
  • In an electron cloud, an electron farther east away from the nucleus has?
    9·1 answer
  • 30 PTS
    11·1 answer
  • This is a model of a Chlorine atom. How likely is it that this atom would want to bond with another atom? Chlorine atom Question
    13·1 answer
  • A photon with a frequency of 5.48 × 10^14 hertz is emitted when an electron in a
    5·1 answer
  • | 1)
    12·1 answer
  • The cycle of the moon through its phases or the synodic month is___.
    12·2 answers
  • What is the average salt content of seawater?
    10·1 answer
  • Distance = 500 miles<br><br> Time = 10 hours<br><br> Average Speed = ?????
    15·1 answer
  • a block of mass 5 kg is being pulled along a board horizontally with a constant velocity; the coefficient of friction between th
    12·1 answer
  • 3. What is the acceleration of a car at rest that stays at rest over 10 seconds?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!