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
Marysya12 [62]
3 years ago
5

Which of the following best describes magnetic fields? Question 4 options: Magnetic fields must have only positive charges. Magn

etic fields are always found in insulators. Magnetic fields need a conductor. Magnetic fields have north and south magnetic poles.
Physics
2 answers:
pochemuha3 years ago
8 0
<h3><u>Answer;</u></h3>

Magnetic fields have north and south magnetic poles.

<h3><u>Explanation;</u></h3>
  • <em><u>Magnetic fields are generated whenever charge is in motion. Magnets are those materials that have the capability to generate magnetic fields. </u></em>
  • <em><u>Magnetic fields have various characteristics which includes; they originate from the north poles and flow towards the south poles, they are exhibited in the form of magnetic field lines.</u></em> Magnetic fields lines never cross one another,they all have the same strength and seek the path of least resistance between opposite magnetic poles etc.
Kobotan [32]3 years ago
7 0
<span> Magnetic fields have north and south magnetic poles.</span>
You might be interested in
A 500kg elevator is raised to a height of 10 m in 10 seconds. Calculate the power of the motor.
Hunter-Best [27]

Answer:

Correct answer: Third statement  P = 4900 W

Explanation:

Given:

m = 500 kg  the mass of the elevator

h = 10 m  reached height after t = 10 seconds

P = ? power of the motor

The formula for the calculating power of the motor is:

P = W / t

since work is a measure of change in this case of potential energy then it is:

W = ΔEp = Ep - 0 = Ep

In this case we must take g = 9.81 m/s²

Ep = m g h = 500 · 9.81 · 10 = 49,050 W ≈ 49,000 W

Ep ≈ 49,000 W

P = Ep / t = 49,000 / 10 = 4,900 W

P =4,900 W

God is with you!!!

3 0
3 years ago
A helicopter is traveling with a velocity of 12 m/s directly upward.
Irina-Kira [14]

Answer:

H = 27.35 m

Explanation:

From projectile motion, we know that;

h = (v_o)²/2g

Where;

v_o = 12 m/s

g = 9.8 m/s²

Thus;

h = 12²/(2 × 9.8)

h = 144/19.6

h = 7.35 m

Now, we are told that when the man is 20 m above the pillow, he lets go of

the rope.

Thus, greatest height reached by the man above the ground is;

H = 20 + h

H = = 20 + 7.35

H = 27.35 m

5 0
2 years ago
Scissors are considered a compound machine because
Novosadov [1.4K]
They make work easier
3 0
3 years ago
Two atoms with different mass number but the same atomic number are called A) elements. B) ions. C) isotopes. D) nuclei.
saw5 [17]

C isotopes is the correct answer. Isotopes are variants of a particular chemical element which differ in neutron number, and consequently in nucleon number.All isotopes of a given element have the same number of protons but different numbers of neutrons in each atom.  

Hope this helps! :)


4 0
3 years ago
Read 2 more answers
What is important when it comes to winning
Dmitry_Shevchenko [17]

Answer:

satisfaction, enjoyment and fair play

3 0
2 years ago
Read 2 more answers
Other questions:
  • An external resistor with resistance R is connected to a battery that has emf ε and internal resistance r. Let P be the electric
    5·1 answer
  • Question from my vector statics class (deals with vectors from physics)
    8·2 answers
  • Of the following nonmetals which is the least reactive A.S B. Cl C. Br D. Se
    11·1 answer
  • Which of these is not part of the solar system? black holes, planets, stars, astroids
    6·2 answers
  • Which is more work, pushing with 115 N over 15m or lifting 20N over 10 m?
    14·2 answers
  • Is F=mxa expressed in equation in newtons second law of motion?
    12·1 answer
  • An immersion heater of power J= 500 W is used to heat water in a bowl. After 2 minutes, the temperature increases from T1= 85°C
    11·1 answer
  • A particle is confined to a one-dimensional box that is 50 pm long. What is the smallest possible uncertainty in momentum for th
    9·1 answer
  • g f, as a pioneer, you wished to warm your room by taking an object heated on top of a stove into it, which of the following 15
    13·1 answer
  • The ,______provides rigidity and protection to the plant cell​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!