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Electromagnetism
Page 8
Questions (3,771)
List two ways you can increase the strength of an electromagnet and explain how they would increase the strength.
Your answer:
1 answer
asked by
FF
222 views
The primary coil consists of 2 loops and there is a voltage of 6 V across the coil. If the secondary coil consists of 10 loops,
4 answers
asked by
Hi
1,446 views
In addition to the Mg nucleus at x = 3 cm, another 3e charge is situated on the y-axis,3cm away from the origin in the +y
25 answers
asked by
asha
719 views
Which is the cause of the suns magnetic properties?
1 answer
asked by
Lynn
118 views
At the upper surface of the earth's atmosphere, the time-averaged magnitude of the Poynting vector is referred to as the solar
5 answers
asked by
Rohan
1,971 views
A particle leaves the origin with a speed of 2.4 times 10^6 m/s at 38 degrees to the positive x axis. It moves in a uniform
3 answers
asked by
kenzie
1,929 views
How does the Coulomb force affect charge interactions?(1 point)
A. Like and opposite charges attract. B. Like charges attract,
2 answers
asked by
Anonymous
88 views
Which is the cause of the sun's magnetic properties?(1 point)
Responses rapid spinning of metals in the core rapid spinning of
4 answers
asked by
yamomma
61 views
Two identical small charged spheres, each having a mass of 3.00*10^-2 kg hang in equilibrium . The length L of each string is
2 answers
asked by
katlego
1,313 views
A long, straight wire carries a current of 740 mA. A thin metal rod 45 cm long is oriented perpendicular to the wire and moves
1 answer
asked by
Martina
665 views
A 550-turn solenoid is 15 cm long. The current in it is 33 A. A 3.0-cm-long straight wire cuts through the center of the
2 answers
asked by
Michael
787 views
When current travels through a wire, where is the magnetic field?
(Standard SPS10 c) A. The magnetic field is on the opposite
4 answers
asked by
Waiter
747 views
Parker wound a wire around a large iron nail. He then created an electromagnet by connecting the ends of the wire to different
4 answers
asked by
hi
559 views
An electron is accelerated by a 6.4 kV potential difference. The charge on an electron is 1.60218 × 10^−19 C and its mass is
3 answers
asked by
cr
579 views
Students built two electromagnets. The electromagnets are the same except that one has 20 wire coils around its core, and the
3 answers
asked by
the real BARNY THE DINO :)
318 views
A conductor consists of a circular loop of radius R and two straight, long sections The wire lies in the plane of the paper and
2 answers
asked by
ANITA
880 views
Electricity may be generated by rotating a loop of wire between the poles of a magnet. The induced current is greatest when a.
1 answer
asked by
Anonymous
738 views
Using a simple model of an electromagnet describe the factors that increase the magntic field strength of an electromagnet
1 answer
asked by
:)
299 views
A current of 6.0 amps passes through a motor that has a resistance of 5.0 ohms. Calculate the power
30 watts 150 watts 180 watts
6 answers
asked by
Bubbles
3,378 views
An electron moving through an electric field experiences an acceleration of 6.1 multiplied by 103 m/s2.
(a) Find the electric
4 answers
asked by
jake
2,246 views
How do electromagnets cause a maglev train to levitate above the track? (1 point)
Responses Magnets in the sides of the tracks
1 answer
asked by
the real BARNY THE DINO :)
305 views
The current density of an ideal p-n junction under illumination can be described by:
J(V)=Jph−J0(eqVkT−1) where Jph is the
7 answers
asked by
Anonymous
3,915 views
An electron travels at a speed of 4.0×104 m/s through a uniform magnetic field whose magnitude is 1.4×10−3 T.
What is the
5 answers
asked by
Lanise
1,268 views
The electric field everywhere on the surface of a charged sphere of radius 0.260 m has a magnitude of 545 N/C and points
2 answers
asked by
Help
770 views
A student made an electromagnet using a battery, electrical tape, and metal wire. Which of the following actions will NOT
10 answers
asked by
GTA 5 Gt:trillesthooper2
2,395 views
We find an electric field of magnitude E = 1.2 x 107 V/m across a particular nerve membrane.
The potential difference between the
1 answer
asked by
Crystal
419 views
An electron enters the region of a uniform electric field between two oppositely charged parallel plates as shown, with an
4 answers
asked by
UnKnown
1,671 views
After being exposed to an electromagnetic shrinking machine, Joe's height decreased by 120 cm over 1.5 seconds. His height
12 answers
asked by
Lover
3,225 views
A spherical cloud of charge of radius R contains a total charge +Q with a nonuniform volume charge density that varies according
3 answers
asked by
derival
1,566 views
A proton is moving in a circular orbit of radius 11.8 cm in a uniform magnetic field of magnitude 0.232 T directed perpendicular
4 answers
asked by
cr
929 views
what causes the current in a loudspeaker to go backwards and forwards
7 answers
asked by
noor
1,246 views
An electron is launched from the negative plate. It strikes the positive plate at a speed of 2.3×10^7 m/s. What was the
4 answers
asked by
katie
2,212 views
Consider a coaxial cable with a central conducting wire (r=1mm) surrounded by an outer coaxial conducting sheath
4 answers
asked by
JuanPro
772 views
If the wavelength of line B is 142.5 nm, calculate the wavelength of line A.
Line A is the transition of n=6 to n=3 Line B is the
4 answers
asked by
Robin
1,858 views
How many protons are needed to produce a total charge of 2.5*10^-15 C?
4 answers
asked by
Matt
1,451 views
A proton traveling due east in a region that contains only a magnetic field experiences a vertically upward force away from the
5 answers
asked by
Daniel
3,762 views
Magnetic fields are produced by moving charges and exert
forces on moving charges. When a particle with charge q is moving with
4 answers
asked by
Phil
906 views
There are two situations in which it possible for a charged particle to be in a magnetic field but not experiencing a magnetic
5 answers
asked by
Connor
4,529 views
An electron experiences an electric force of 0.70 nN . What’s the field strength at its location?
6 answers
asked by
a
4,562 views
A long coaxial cable consists of two concentric conductors. The inner conductor is a cylinder with radius R1, and it carries a
4 answers
asked by
abdul rahman
3,149 views
A square coil with 30 turns has sides that are 18 cm long. When it is placed in a 0.31-T magnetic field, a maximum torque of
4 answers
asked by
Keith
1,873 views
Two electrons are in the vicinity of a proton. The potential energy of the proton is −2.16×10−25 J. What is the potential
3 answers
asked by
Jimmy
1,319 views
A long wire carries a current of 20 A along the directed axis of a long solenoid. The field due to the solenoid is 4 mT. Find
4 answers
asked by
Maryam
2,088 views
Microwave ovens typically cook food using microwaves the a frequency of about 3.00 GHz (gigahertz 10 to the nine Hz). Show the
4 answers
asked by
bubba1
4,126 views
Two electrons are suspended in a field and are 2.0 cm away from each other. How much would the electric force between two
5 answers
asked by
help
280 views
An insulating solid sphere of radius a = 0.5 m. If the sphere carries a total positive charge of 15 nC, calculate the magnitude
5 answers
asked by
johnny vrl
1,213 views
A thin 12 cm long solenoid has a total of 460 turns of wire and carries a current of 2.1 A. Calculate the magnitude of the field
4 answers
asked by
JOSE
2,510 views
How strong an electric field is needed to accelerate electrons in a TV tube from rest to one-tenth the speed of light in a
4 answers
asked by
Debra
3,427 views
What might be the mass of a positive ion that is moving 1x10^7m/s and is bent into a circular path of radius 1.55m by a magnetic
5 answers
asked by
NATALIA
1,314 views
What does the photoelectric effect show about the connection between light and electrons?
A. Light can remove electrons from
4 answers
asked by
Morgan
1,840 views
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