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
Fed [463]
3 years ago
9

An electromagnet is a ? with a ? core

Physics
2 answers:
natima [27]3 years ago
8 0

Answer:

An electromagnet is a magnet which attracts metals only when electrically activated.

Vlada [557]3 years ago
3 0
A electromagnet is soft metal core made into a magnet by the passage of electric current through a coil surrounding it.

Brainiest plz
You might be interested in
The sun's _____ is the layer that emits visible light.
galben [10]
The Photosphere is the right answer
7 0
4 years ago
A police car is located 50 feet to the side of a straight road. A red car is driving along the road in the direction of the poli
NNADVOKAT [17]

Answer:74.33 feet per sec

Explanation:

Given

Police car is 50 feet side of road

Red car is 140 feet up the road

Distance between them is decreasing at the rate of 70 feet per sec

From figure

x^2+y^2=z^2

z=\sqrt{140^2+50^2}

z=148.66 feet

as the red car is moving

therefore its velocity magnitude is given by

\frac{\mathrm{d} x}{\mathrm{d} t}

2x\times \frac{\mathrm{d} x}{\mathrm{d} t}+0=2z\frac{\mathrm{d} z}{\mathrm{d} t}

x\frac{\mathrm{d} x}{\mathrm{d} t}=z\frac{\mathrm{d} z}{\mathrm{d} t}

140\times \frac{\mathrm{d} x}{\mathrm{d} t}=148.66\times 70

\frac{\mathrm{d} x}{\mathrm{d} t}=74.33 feet\ per\ sec

6 0
4 years ago
A horizontal applied force of magnitude 25 N acts on a block sliding on a horizontal surface. The force of friction between the
kompoz [17]

' A ' and ' D ' are both correct statements.

3 0
3 years ago
A quartz crystal vibrates with a frequency of 93621 Hz. What is the period of the crystals motion? T=1/93621 does not give me th
hram777 [196]

Answer:0.0000107s

Explanation:

f=1/T

T=1/f

f=93621 1/s

t=1/93621

T=0.00001068  s

3 0
3 years ago
Which letter represents the wavelength of
Morgarella [4.7K]
The letter D represents the wavelength
4 0
3 years ago
Read 2 more answers
Other questions:
  • assuming that there are no outside forces, what will happen if two neutral atoms are placed 1 M apart in a vacuum. a)the atoms w
    13·1 answer
  • Which of the following tests uses calipers to assess body composition? A. skinfold test B. sit-and-reach C. arm hang D. curl-up
    10·1 answer
  • An object carrying a force of 15N has a mass of 3kg. What is the<br> acceleration of this object?
    11·1 answer
  • Help me with this Weather Station Model by answering 5 questions. It is due tomorrow.
    7·1 answer
  • Two identical trucks have mass 5400 kg when empty, and the maximum permissible load for each is 8000 kg. The first truck, carryi
    10·1 answer
  • It is best to say that marine debris
    13·1 answer
  • Find the force on an object which has a mass of 20 kg and an acceleration of 10 m/s2.
    6·1 answer
  • A handbag weighing 162 N is carried by two students each holding the handle of the bag
    14·1 answer
  • Each of the rods depicted below were machined from same stock metal. They were originally machined to be the same length, but th
    8·1 answer
  • A circuit carries a current of 0.64 A when there is a resistance of 50.0 Ω. The voltage applied to the circuit, to the nearest w
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!