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Electromagnetism
Page 4
Questions (3,843)
What is an electric field
2 answers
asked by
Sinachi
121 views
Students build four electromagnets and test them by picking up metal tacks. Here are their partial results.
12 coils 4 tacks 24
96 answers
asked by
meli
295 views
FM radio stations use radio waves with frequencies from 88.0 to 108 MHz to broadcast their signals. Assuming that the inductance
3 answers
asked by
Mary
1,493 views
Two identical small charged spheres, each having a mass of 5.0x102 kg and having the
magnitudes of -3µC and -4µC, hang in
2 answers
asked by
Kondwani moyo
135 views
A proton accelerates from rest to 3.00x10^6m/s in 1.00x10^-6s in a uniform electric field E. What is the magnitude of the
2 answers
asked by
Robert
948 views
What is the effect on the strength of an electromagnet when you increase the number of coils?
a The strength increases b The
1 answer
asked by
re
159 views
Electromagnetism in Use Quick Check
What creates the magnetic force in an electromagnet? 1. coiled wire 2. electric current 3.
3 answers
asked by
sunghoonlover
289 views
What do earth magnetic poles mean in relationship to magnetism?
1 answer
asked by
Science
52 views
Using the equation for Coulomb's Law, what happens to the force between two objects when you double the distance between them?
\l
3 answers
asked by
A
151 views
The Coulomb is the SI unit for:
a Distance b Charge c Work d Force
1 answer
asked by
A
149 views
Directions: Read the passage about the factors that affect the magnetism of electromagnets.
An electromagnet consists of an
4 answers
asked by
Anonymous ;)
299 views
Write each part of Electricity and each part of magnetism.
1 answer
asked by
Sandra
58 views
Witch property is unique to electromagnattic waves
3 answers
asked anonymously
160 views
Which question would best identify a wave as being electromagnetic?
A. Does it travel through matter? B. Does it travel through a
2 answers
asked by
Anonymous ;)
213 views
The test charge is 12 mm from Q1 and 20 mm from Q2. If Q1 has a relative charge of +4e and Q2 has a relative charge of +8e
6 answers
asked by
Henok
979 views
a point charge q=-8.0nC is located at origin . find electric field vector at point x=1.2m,y=-1.6m
4 answers
asked by
B.Y.SARAT
1,201 views
Two fixed charges -4.0 C and -5.0 C, are separated a certain distance.
a) Is the net electric field at a location halfway between
3 answers
asked by
Jamaal
1,244 views
Which of the following is NOT a way you can strengthen an electromagnet?
a Increasing the voltage of a battery b Using thicker
1 answer
asked by
kali
176 views
A 500 turn solenoid with a length of 20 cm and a radius of 1.5 cm carries a current of 2.0 A. A second coil of four turns is
2 answers
asked by
Chris Adison
668 views
suppose that at any tiem t(sec) the current i(amp) in an alternating current circuit is i=2cost+2sint. What is the peak (largest
4 answers
asked by
ee
1,947 views
using the Amperes Law
The circle on the integral means that B(r) must be integrated A. over a circle or a sphere. B. along any
5 answers
asked by
Spencer
1,453 views
Two nitrogen atoms are separated by 4 cm. Each atom has 2 extra electrons. What is the force between them? is it attractive or
1 answer
asked by
Anonymous
393 views
electrical field lines for a positive charge go _ from the charge, and field lines from a negative charge go _ from the charge.
1 answer
asked by
no name
63 views
(Engineering) The current / varies as the electromotive force E and inversely as the resistance R. If in a system, a current of
5 answers
asked by
McKenna Louise
1,755 views
A heavy conductor (mass m, length `, resistance R) is suspended by two springs each with spring constant k, and connected to a
5 answers
asked by
cr
2,174 views
A current-carrying conductor that is 8.00x10^-2 m long is placed perpendicular to a magnetic field that has a strength of
3 answers
asked by
sarah
965 views
In very very simple terms explain electric lines of force
2 answers
asked by
Harrison
62 views
Finish the sentence
opposites attract, _______ repel
7 answers
asked by
a
60 views
An electromagnet is a coil of wire with a current running through it. This creates an electromagnetic field. An additional
2 answers
asked by
ssm
86 views
An emf produced when...
2 answers
asked by
Fuad Faji Jemal
63 views
Which device functions with the principle of mutual inductance
2 answers
asked by
Fuad Faji Jemal
72 views
Define addy currents
2 answers
asked by
Fuad Faji Jemal
69 views
State the law of attraction
State the law of repulsion
2 answers
asked anonymously
55 views
a)suppose you walk across the carpet, touch a metal doorknob and get a shock. What charge do the particles causing charge have a
2 answers
asked anonymously
125 views
Suppose you have two charges, +4nC at point A and -6nC at point B that are separated by a distance of 100cm. What would be the
2 answers
asked by
James
114 views
what device does not use an electromagnet
2 answers
asked anonymously
91 views
what device does but use an electromagnet
2 answers
asked anonymously
65 views
How is an electromagnetic field produced?
A) when a conductor interacts with a magnet B) when a current runs through a conductor
1 answer
asked by
ray
105 views
What questions do you still have about electric and magnetic interactions
4 answers
asked anonymously
112 views
What data could you record on magnetic interactions
2 answers
asked anonymously
56 views
How do electromagnets cause a maglev train to levitate above the track? (1 point)
Magnets in the track and magnets in the bottom
2 answers
asked by
ulyjh,b
145 views
How can a team of students work together creatively to design an electromagnet? (1 point)
They can research different kinds of
2 answers
asked by
ulyjh,b
115 views
Which of the following factors would decrease the magnetic field strength of an electromagnet? (1 point)
increasing the distances
5 answers
asked by
ulyjh,b
151 views
Biot's savart law??
2 answers
asked by
Kartik
86 views
How do electromagnets cause a maglev train to levitate above the track? (1 point)
Responses Magnets in the track and magnets in
2 answers
asked by
Drake
127 views
Why is glass a good insulator?
* 1 point The atoms in glass hold on tightly to their negatively charged particles. The atoms in
11 answers
asked anonymously
239 views
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. A radio signal travels
2 answers
asked by
lol gee wow
99 views
Explain how electromagnet move a magnet train.
2 answers
asked by
Milo
45 views
Which of the following electromagnets would have the greatest magnetic field?
a b c d
2 answers
asked by
S
70 views
Which of the following is NOT a way you can strengthen an electromagnet?
a Increasing the voltage of a battery b Increasing the
2 answers
asked by
A
77 views
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