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
alina1380 [7]
3 years ago
6

PLEASE HELP ASAP!! Will give brainliest!! Which item is necessary to make an electromagnet?

Physics
1 answer:
vichka [17]3 years ago
8 0
To make something electrical you need electricity and the wires will turn a magnet into an electromagnet.
or for a short answer: <span>1) soft iron core 2) coil of insulated wire 3)source of electricity</span>
You might be interested in
Can someone explain to how to calculate this
Karo-lina-s [1.5K]

answer

option d is the correct answer

explanation

as we know frequency is equal to 1 /t

f= 457 Hz

t=1

SO, 1/457

=0.0022sev

3 0
3 years ago
Speakers A and B are vibrating in phase. They are directly facing each other, are 8.2 m apart, and are each playing a 78.0 Hz to
Stels [109]

Answer:6.298,4.1,1.9015

Explanation:

Wavelength=\frac{velocity of sound }{frequency}

=\frac{343}{78}=4.397 m

Distance of 3rd speaker from speaker A is x

From B 78-x

Difference between the distances must be a whole number of wavelengths

First

x-\left ( 8.2-x\right )=4.397    for 1 st wavelength

2x=8.2+4.397=12.597

x=6.298m

second

For zero wavelength

x-\left ( 8.2-x\right )=0

2x=8.2

x=4.1m

Third

\left ( 8.2-x\right )-x=4.397

x=1.9015 m

6 0
3 years ago
In a pressure cooker, a lid is screwed tightly onto a pot so that the air pressure in the pot is increased. What effect, if any,
Andreyy89
It will increase the temp
8 0
3 years ago
Read 2 more answers
Can a vector be shorter than one of its components
Sauron [17]
It can never be shorter than a component - magnitude of avector is the square root of the sum of the components squared, and a square function never produces a negative number. However, it can be the same size as its component, if that component is the only one
3 0
3 years ago
Which characteristics describe the human genetic code? Check all that apply. contains over 3 billion base pairs can only help un
lidiya [134]

Answer:

contains over 3 billion base pairs

can help explain genetic diseases

composed of 50,000 genes

A, C, D,

Explanation:

JUST TOOK THE TEST ON e d g e n i u t i t y

3 0
3 years ago
Read 2 more answers
Other questions:
  • On the average, about what percentage of the solar energy that strikes the outer atmosphere eventually reaches the earth's surfa
    12·1 answer
  • Earth's layers formed as result of differentiation. During differentiation, different zones of elements form layers and today we
    6·2 answers
  • You watch distant Sally Homemaker driving nails into a front porch at a regular rate of 1 stroke per second. You hear the sound
    13·1 answer
  • A student is on a balcony 15.6 m above the street. She throws a ball vertically downward at 10.7 m/s.
    13·1 answer
  • Dr. Eriksson is working on a material called selenium. She is adding a certain number and type of atoms to the selenium, which w
    12·2 answers
  • If an object is in freefall it will experience air blank which generates a drag force
    12·2 answers
  • A +26.3 uC charge qy is repelled by a force
    5·1 answer
  • Place a beaker covering its free surface with a paper over a coin as shown in the figure- 1. The coin can be seen through the si
    9·1 answer
  • Refraction occurs when a wave enters a new medium at an angle because
    8·1 answer
  • Progress of science has not caused any ill effect true or false?​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!