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
dolphi86 [110]
3 years ago
13

Two generators use the same magnetic field and operate at the same frequency. Each has a single-turn circular coil. One generato

r has a coil radius of 3.5 cm and a peak emf of 1.8 V. The other generator has a peak emf of 3.9 V. Find the coil radius r of this other generator.
Physics
1 answer:
Volgvan3 years ago
3 0

Answer:

The coil radius of other generator is 5.15 cm

Explanation:

Consider the equation for induced emf in a generator coil:

EMF = NBAω Sin(ωt)

where,

N = No. of turns in coil

B = magnetic field

A = Cross-sectional area of coil = π r²

ω = angular velocity

t = time

It is given that for both the coils magnetic field, no. of turn and frequency is same. Since, the frequency is same, therefore, the angular velocity, will also be same. As, ω = 2πft.

Therefore, EMF for both coils or generators will be:

EMF₁ = NBπr₁²ω Sin(ωt)

EMF₂ = NBπr₂²ω Sin(ωt)

dividing both the equations:

EMF₁/EMF₂ = (r₁/r₂)²

r₂ = r₁ √(EMF₂/EMF₁)

where,

EMF₁ = 1.8 V

EMF₂ = 3.9 V

r₁ = 3.5 cm

r₂ = ?

Therefore,

r₂ = (3.5 cm)√(3.9 V/1.8 V)

<u>r₂ = 5.15 cm</u>

You might be interested in
Kinetic and potential energies of a roller coaster I'm doing a portfolio
Brut [27]
On a roller coaster<span>, </span>energy<span> changes from </span>potential<span>to </span>kinetic energy<span> and back again many times over the course of a ride. </span>Kinetic energy<span> is </span>energy<span> that an object has as a result of its motion. All moving objects possess </span>kinetic energy, which is determined by the mass and speed of the object.

4 0
3 years ago
Use one of the following formulas to solve distance:
zhuklara [117]

Answer:

72m

Explanation:

Given parameters:

Speed of the Burrito  = 4m/s

Time  = 18s

Unknown:

Distance covered by the flying Burrito = ?

Solution:

Speed is the rate of distance covered per unit of time.

        Speed  = \frac{distance}{time}  

 Distance  = Speed x time

So;

 Distance  = 18 x 4  = 72m

4 0
3 years ago
Describe how fallacies can be created and spread
lina2011 [118]
Fallacies can be spread by companies or even people who want to sell a product for profit (money). They can also be spread on accident or on purpose by people who misunderstand the concept.
8 0
3 years ago
What relation does the boiling point of an amine have to a similar hydrocarbon?
den301095 [7]

Answer:

Amine have higher boiling points than hydrocarbons.

Explanation:

Primary, secondary and tertiary amines have higher boiling points than hydrocarbons because they can engage in intermolecular hydrogen bonding.

Amines has three classes

1. Primary amines

2. Secondary amines

3. Tertiary amines

All this classes of amines have higher boiling point than hydrocarbons due to C-N bond in them

This is because amines can engage in hydrogen bonding with water, amines of low molar mass are quite soluble in water.

Amines are having higher boiling points than hydrocarbons, as C-N bond in amines is more polar than a C-C bond in hydrocarbons. Due to the polar nature of amines, it forms intermolecular H-bonds and exists as associated molecules.

5 0
3 years ago
Read 2 more answers
Where is the acceleration zero?
ladessa [460]

Answer:

When acceleration is zero (that is, a = dv/dt = 0), rate of change of velocity is zero. That is, acceleration is zero when the velocity of the object is constant. so probably D

Explanation:

D

3 0
2 years ago
Other questions:
  • surface is tipped to all principal planes of projection. Because it is not perpendicular to any projection plane, it cannot appe
    5·1 answer
  • How many legs a cow has​
    10·1 answer
  • ¿Es posible denominar al creacionismo como modelo científico?
    7·1 answer
  • 2 Calculate the distance from a srtaight wire where the magnetuc field is 0.66 T. the current in the wire is 4A and K = 2 x 10^-
    14·1 answer
  • Match the technology that uses radio waves to the field in which it is used.
    5·1 answer
  • Current is a measure of…
    6·1 answer
  • What is the Frequency of a light wave with a Wavelength of 680 x 10^-7m?
    7·1 answer
  • A drawn or written record of star groups in the night sky are called
    14·2 answers
  • Indicate all ways in which the graph used in question 4 would change if the Normal Force applied to the object was increased. Be
    8·1 answer
  • Most of the bending of light in the eye is done at the air-cornea interface. By what angle (θcornea) is the beam of light shown
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!