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
Advocard [28]
3 years ago
13

A metal rod of length (L) moves with velocity (v), perpendicular to its length, in a magnetic field B, which is perpendicular to

both the rod and its velocity. If the length of the rod is doubled, what happens to the electric field in the rod
Physics
1 answer:
Alborosie3 years ago
6 0

Explanation:

If a metal rod of length L moves with velocity v is moving perpendicular to its length, in a magnetic field B, the induced emf is given by :

\epsilon=Blv

The electric field in the conductor is given by :

E=\dfrac{\epsilon}{l}\\\\E=\dfrac{Blv}{l}\\\\E=Bv

It is clear that the electric field is independent of the length of the rod. If the length of the rod is doubled, the electric field in the rod remains the same.

You might be interested in
A............... pulley helps us by changing the direction of the applied effort​
DerKrebs [107]

Explanation:

Malai thaxai. na

ffndgufijvdyfbffnfcjoigkf

8 0
3 years ago
Read 2 more answers
A parcel has a mass of 500 g .calculate its weight (assume the gravitational field strength is 10 N/Kg
Effectus [21]

Answer:

5N

Explanation

convert grams to kg and multipy with 10 (.5 *10)=5N

5 0
3 years ago
A toy dart gun generates a dart with a momentum of 140 kg*m/s and a
irinina [24]

Answer:

35 kg

Explanation:

From the question,

Momentum (I) = mass (m) × velocity (v)

I = m×v................... Equation 1

Where m = mass, v = velocity

make m the subject of the equation

m = I/v.................... Equation 2

Given: I = 140 kgm/s, v = 4 m/s

Substitute these values into equation 2

m = 140/4

m = 35 kg

Hence the mass of the dart is 35 kg

6 0
3 years ago
Read 2 more answers
Another name for the water cycle is the​
atroni [7]

Answer:

<h2>Hydrologic cycle</h2>

Explanation:

Stay safe, stay healthy and blessed.

Have a good day !

Thank you

5 0
2 years ago
Read 2 more answers
Earth's Moon is considered to be geologically dead because its interior has cooled considerably. Select the features of Earth th
DochEvi [55]

Answer:

The correct option is;

E. motion of tectonic plates.

Explanation:

The Moon is formed from the Earth, and so have similar composition. However, the smaller size of the moon as well as the low temperature of the Moon's mantle compared to the interior of the earth, contribute the state of the Moon having no active tectonic plate motion and no convection.

The convection in the mantle, drives Earth's tectonic plate motions. The mantle within Earth moves at a rate of some centimeters annually, while the Moon, geologically is a dying world.  

4 0
3 years ago
Read 2 more answers
Other questions:
  • The laser pointer emits light because electrons in the material are excited (by a battery) from their ground state to an upper e
    6·1 answer
  • As temperature increase what energy increases
    14·1 answer
  • Why is the answer B for this problem?
    12·1 answer
  • Speedy Sue, driving at 34.0 m/s, enters a one-lane tunnel. She then observes a slow-moving van 160 m ahead traveling at 5.40 m/s
    6·2 answers
  • A cylindrical coil of radius 6 cm is placed in magnetic field, which is changing in time with the rate 0.5 T/s. The magnetic fie
    8·1 answer
  • A wire is stretched just to its breaking point by a force F . A longer wire made of the same material has the same diameter. The
    9·2 answers
  • Vector A has a magnitude of 63 units and points west, while vector B has the same magnitude and points due south. Find the magni
    10·1 answer
  • A system of 4 electrons, 18 protons, and 4 neutrons has a net charge of?
    13·1 answer
  • How much work do you do when you push a shopping cart with a force of 20 N for a distance of 5m?
    7·1 answer
  • Which statement explains how convection currents affect the movement of plates?Explain the main conflict between a character and
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!