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
9966 [12]
2 years ago
15

A rectangular loop of copper wire of resistance r has width a and length

Physics
1 answer:
sergij07 [2.7K]2 years ago
4 0

Answer:

Explanation:

b = b₀ cos ω t

When t = 0 , magnetic field will be b₀ and positive or directed into the page . This is the maximum value of magnetic field. As times goes ahead , magnetic field decreases so magnetic flux decreases . The induced emf or current will be such that it will  opposes this reduction of magnetic field. Hence , current in clockwise direction will be  generated in the coil which will generate magnetic flux into the paper.

In this way  current will be induced  clockwise.

You might be interested in
Which statement about two objects having the same momentum is true?
Reil [10]

Answer:

The product of mass X velocity is the same for both

Explanation:

The momentum of a body is the product of its mass and velocity.

  Momentum  = mass x velocity

Two objects having equal momentum will have the same for the product of their mass and velocity.

  • It is amount of motion a body can produce.
7 0
3 years ago
The reflection of a sound wave from a wal is called
WINSTONCH [101]
I think its an echo?
4 0
3 years ago
Read 2 more answers
Examples of reaction force and action force hewlp​
mrs_skeptik [129]

Answer:

Action-Reaction Force Examples in Everyday Life

Recoil of a Gun.

Swimming.

Pushing the Wall.

Diving off a Raft.

Space Shuttle.

Explanation:

hope this helps

6 0
3 years ago
Read 2 more answers
A charge Q is uniformly spread over one surface of a very large nonconducting square elastic sheet having sides of length d. At
GuDViN [60]

Answer:

E/4

Explanation:

The formula for electric field of a very large (essentially infinitely large) plane of charge is given by:

E = σ/(2ε₀)

Where;

E is the electric field

σ is the surface charge density

ε₀ is the electric constant.

Formula to calculate σ is;

σ = Q/A

Where;

Q is the total charge of the sheet

A is the sheet's area.

We are told the elastic sheet is a square with a side length as d, thus ;

A = d²

So;

σ = Q/d²

Putting Q/d² for σ in the electric field equation to obtain;

E = Q/(2ε₀d²)

Now, we can see that E is inversely proportional to the square of d i.e.

E ∝ 1/d²

The electric field at P has some magnitude E. We now double the side length of the sheet to 2L while keeping the same amount of charge Q distributed over the sheet.

From the relationship of E with d, the magnitude of electric field at P will now have a quarter of its original magnitude which is;

E_new = E/4

3 0
3 years ago
Early LCD backlights use _______________ technology, popular for its low power use, even brightness, and long life.
Gala2k [10]

Answer:

cold cathode fluorescent lamp

Explanation:

A cold cathode fluorescent lamp (CCFL) is a lighting system that uses two phenomena: electron discharge and fluorescence.

CCFLs are mainly used as light sources for backlights, since they are compact and durable than ordinary fluorescent lamps. They exhibit a wide range of brightness and color (color temperature and chromaticity) that can be achieved by varying the pressure and type of the material injected into the glass tube. The thickness and type of the phosphor used to coat the inner wall of the tube also plays a role in altering the color and brightness.

8 0
3 years ago
Other questions:
  • Which words describe the composition of the inner planets ? Select three options,
    8·2 answers
  • A positron undergoes a displacement ∆r= 2i -3j+6k, ending with the position vector r= 3j-4k, in meters. what was the positron's
    12·1 answer
  • A mass is attached to the end of a spring and set into simple harmonic motion with an amplitude A on a horizontal frictionless s
    8·1 answer
  • Help with this please
    8·1 answer
  • When you approach a yield sign, while trying to enter or merge onto another road, traffic already on that road has the right of
    5·2 answers
  • A patient who smokes has hypertension. how could smoking have contributed to the patients hypertension
    11·2 answers
  • Thylakoids contain chlorophyl that absorb solar energy
    8·1 answer
  • If volume is constant and heat is added, what happens to the
    9·1 answer
  • True or false
    13·1 answer
  • Explain why the light bulb isn't lighting up in the circuit<br> pictured on the right.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!