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
Tatiana [17]
3 years ago
5

Rob is studying for an exam. He listed some properties of magnets in a Maglev train.

Physics
2 answers:
fredd [130]3 years ago
7 0
The answer is the third one. Maglev is short for Magnetic Levitation in which trains skim on a guideway utilizing the guideline of attractive shock. Every magnet has two shafts. Presently in the event that you play with two magnets, you'll understand that inverse shafts pull in, though comparable posts repulse. This shocking property of magnets is utilized as a part of Maglev trains. However,instead of utilizing lasting magnets, the standard of electromagnetism is utilized to make solid and huge impermanent magnets. At the point when an electric current is gone through a loop of wire, attractive field is created around the curl as indicated by Faraday's laws.
inn [45]3 years ago
5 0

Answer:

D. The repelling of the support magnet decreases friction.

The magnets are repelling, so they are not directly touching. This allows for decreased friction.

You might be interested in
7. What is the velocity of an object with a distance of 90m south and a time of<br> 5s?
IrinaK [193]

Answer:

Explanation:

v= s/t

V =90m/5s

V = 8m/s

4 0
2 years ago
A cyclist is moving at a speed of 15 m/s. If the combined mass of the bike and person is 100 kg,
MaRussiya [10]

Answer:

Explanation:

Momentum is equal to mass times velocity in kg and m/s, respectively. Therefore,

p = 100(15) so

p = 1500 \frac{kg*m}{s}

5 0
2 years ago
PLS HELP IM SOO CONFUSED!
Feliz [49]
False.

As temperature increases the more the electrons begin to vibrate more, as it decreases they vibrate less.
7 0
2 years ago
Read 2 more answers
Energy that cannot be used to do useful work is referred to as Select one: a. potential energy. b. entropy. c. kinetic energy. d
topjm [15]

In thermodynamics, entropy (symbolized as S) is a physical magnitude for a thermodynamic system in equilibrium. It measures the number of microstates compatible with the equilibrium macrostate, it can also be said that it is the reason for an increase between internal energy versus an increase in system temperature.

The universe tends to distribute energy evenly; that is, to maximize entropy. Intuitively, entropy is a physical quantity that, by calculation, allows us to determine the part of energy per unit of temperature that cannot be used to produce work.

Therefore the correct answer is B.

5 0
2 years ago
What is the angular momentum of a 0.25 kg mass rotating on the end of a piece of
finlep [7]

L = r x p = rmv = mr²ω

L = 0.25 x 0.75² x 12.5 = 1.758

4 0
1 year ago
Other questions:
  • In astronomy, the term perihelion refers to the point in the orbit of an asteroid, comet, or planet when it is closest to the su
    15·1 answer
  • Which of the following statements about Australian football is TRUE? A. The players tend to wear a large amount of padding. B. G
    15·2 answers
  • HELPPP. PHYSICAL SCIENCE MECHANICAL ENERGY LAB
    13·1 answer
  • I want to answer these questions about vectors
    13·1 answer
  • A football player is running with a velocity or 10 m/s. At that velocity, his momentum is 2500 kg*m/s. What is the football play
    11·1 answer
  • Define limitations in the operation conditions of a pn junction<br>​
    7·1 answer
  • Earlier in this lesson, you spent some time thinking about events that involve matter and energy. Consider balls of different sh
    15·1 answer
  • In a weak acid solution, _____.
    5·1 answer
  • Find the moment of force of 60 Newton about an axis of rotation at distance 20 cm from the force​
    7·1 answer
  • How to find the mechanical advantage
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!