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
Ugo [173]
2 years ago
13

Suppose a point charge is located at the center of a spherical surface. The electric field at the surface of the sphere and the

total flux through the sphere are determined. Now the radius of the sphere is halved. What happens to the flux through the sphere and the magnitude of the electric field
Physics
1 answer:
emmasim [6.3K]2 years ago
8 0

Answer:

<em>The flux through the sphere will remain the same, and the magnitude of the electric field will increase by four times.</em>

Explanation:

The electric flux is the number of electric field, passing through a given area. It is proportional to the electric field strength and the area through which this field passes.

If the radius of the sphere is halved, the area of the sphere will reduce by square of the reduction, which will be four times. The electric field lines will become closer together, or technically increase by a fourth of its initial value. The resultant effect is that the electric flux will remain the same.

If originally,

Φ = EA cos∅

where Φ is the electric flux through the sphere

E is the electric field on the sphere

A is the area of the sphere.

If the area of the sphere is reduced to half, then,

the area reduces to A/4,

and the electric field increases to be 4E on the sphere.

The flux now becomes

Φ = 4E x A/4 cos∅

which reduces to

Φ = EA cos∅

which is the initial electric flux on the sphere.

You might be interested in
An ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at 12.8 m/s2 . At t1 the rocket e
Simora [160]

Answer:4.39 s

Explanation:

Given

initial velocity u=0

acceleration a=12.8 m/s^2

velocity acquired by sled in t_1 time

v=0+at

v=12.8t_1

distance traveled by sled in t_1 s

v^2-u^2=2as

(12.8t_1)^2-0=2\times 12.8\times s_1

s_1=6.4\cdot t_1^2

distance traveled in t_2 time with velocity v=12.8t_1

s_2=v\times t_2

s_2=12.8\times t_1\times t_2

s_2=12.8\cdot t_1\cdot t_2

s_1+s_2=5.37\times 10^3

6.4t_1^2+12.8t_1t_2=5370----1

t_1+t_2=97.7 s

t_2=97.7-t_1

substitute the value of t_2 in 1

we get

6.4t_1^2-1250.56t_1+5370=0

thus t_1=\frac{1250.56-1194.33}{12.8}=4.39 s

t_1=4.39 s

5 0
3 years ago
Dinitrogen oxide has?
Vesnalui [34]
Two atoms of the element bind to form dinitrogen and it’s a colourless and odorless diatomic gas with the formula N2. Also Dinitrogen forms up about 78% of earths atmosphere
3 0
3 years ago
What is the first law of conservation of energy? How is the law applicable to the earths energy balance
Vlad1618 [11]

Answer:

First law of thermodynamic state that energy is always conserved, in other word, energy cannot be created or destroyed.

This means that energy can only transfer from one source to another.

For example, the electricity we used to power our phone didn't come from nowhere.

We charge our phone using the energy from the electricity from the outlet.

The outlet gets its energy from the power plant, who generated that energy from burning coal.

The coal they burned got their energy while they were alive as plants.

The plants got their energy from the sun.

The sun got its energy from other cosmic stuff and so on...

My point is that the energy we use will always cycle around. It doesn't come from thin air and it doesn't disappear into thin air either. This help keeps things balance because if energy is created out of thin air then the earth might just blow up. If energy gets erased into thin air then there'll be nothing to fuel life.

5 0
3 years ago
Which of the following orders represents the ordering found in an alphanumeric outline?
makkiz [27]

Answer: D

Explanation: It says that in the paragraph

7 0
2 years ago
Read 2 more answers
A Student walks 2 km in 30 minutes
KengaRu [80]

Answer:

1 km / 15min

Explanation:

The average speed is calculated by simply doing space divided by time so:

2km / 30min that becomes 1km / 15min

Have a good day.

3 0
2 years ago
Other questions:
  • What is the potential energy of a 2,000-kg car parked at the top of a 30-m hill?
    9·2 answers
  • The unit used to measure electric current is the ampere (AA). Now, assume that the current delivered at a wall socket reaches th
    5·1 answer
  • If the energy carried by a wave increases, which other wave property also increases?
    7·1 answer
  • 1. When you have different masses for each sphere, how does the force that the larger mass sphere exerts on the smaller mass sph
    10·1 answer
  • An acceleration of a freely falling body (9.8m/s^2) to ft/s^2
    13·1 answer
  • A charged cloud system produces an electric field in the air near earth's surface. a particle of charge -2.0 × 10-9 c is acted o
    7·1 answer
  • A ‘thermal tap’ used in a certain apparatus consists of a silica rod which
    5·1 answer
  • You push a 22.0 kg box along a rough floor at a constant velocity. The coefficient of kinetic friction between the box and the f
    7·1 answer
  • A ship
    11·1 answer
  • Where on the periodic table does it tell you the number of valence electrons an electron has
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!