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
lilavasa [31]
3 years ago
12

WILL MARK BRAINLIEST!!! Is string a ferromagnetic material?

Physics
1 answer:
Contact [7]3 years ago
4 0

Answer:

See, the string is made of nickel and steel (iron+carbon), materials that are ferromagnetic. That is, a magnet attracts guitar strings. When this ferromagnetic metal vibrates in the magnetic field of the pickup, that disturbs the red field lines which also cross through the coil (not shown).

Explanation:

You might be interested in
1. What does the endocrine system have in common with the muscular system?
Lostsunrise [7]

Answer:

B Both are directly related to movement.

7 0
3 years ago
Explain theory of relativity?​
UkoKoshka [18]
The theory of relativity usually encompasses two interrelated theories by Albert Einstein: special relativity and general relativity, proposed and published in 1905 and 1915, respectively. Special relativity applies to all physical phenomena in the absence of gravity
8 0
3 years ago
Scientists use sonar machines in order to map the contour of the ocean floor. The data from the sonar machines make a model of t
Leviafan [203]
It would be B. since the scanning shows what the terrain is down there

(I listened)

8 0
3 years ago
Read 2 more answers
A string is vibrating between two posts as shown above. Students are to determine the speed of the wave within this string. They
kow [346]

Answer:

The distance between two posts

Explanation:

As the students have already measured the amount of time necessary for the wave to oscillate up and down that is on the string between two posts,They have to measure the speed of the wave.

        ie  v=fλ

<em>They have to measure distance between the posts. </em>

Because wavelength is equal to the distance between the posts ie full length of string.

The frequency of the wave is calculated by

               f= 1/T

Where is the time period which the students have calculated ie the amount of time taken to oscillate up and down,

Thus the wave speed is calculated using formula

            v=λ/T

6 0
3 years ago
A block of mass m is set sliding up along a frictionless ramp inclined at angle θ relative to horizontal. The angle of the ramp
timofeeve [1]

Answer:

1) h is constant

2) h is constant

3) h increases

Explanation:

"What happens to the height h as the angle θ is increased?"

The ramp is frictionless, so the initial kinetic energy is converted to the final gravitational potential energy.

½ mv² = mgh

½ v² = gh

h = v² / (2g)

Since v is constant, h is also constant.

"What happens to the height h if θ and v are kept the same, but the mass m of the block increases?"

As found above, h does not depend on the mass m, so h would remain constant.

"If we keep m and v the same, but now we add a small amount of kinetic friction to the ramp surface, how does the height h change as θ increases?"

This time, some of the kinetic energy is converted into work done by friction.

½ mv² = Fd + mgh

½ mv² = Fh / sin θ + mgh

The friction force can be found by drawing a free body diagram of the block.  There are three forces acting on the block.  Normal force perpendicular to the ramp, weight force pulling down, and friction force pushing down the ramp.

Sum of the forces perpendicular to the ramp:

∑F = ma

N − mg cos θ = 0

N = mg cos θ

Friction is normal force times coefficient of friction:

F = Nμ

F = mgμ cos θ

Substituting:

½ mv² = (mgμ cos θ) h / sin θ + mgh

½ mv² = mgμ h / tan θ + mgh

½ v² = gμ h / tan θ + gh

½ v² = (gμ / tan θ + g) h

As θ increases, tan θ increases.  That makes gμ / tan θ + g decrease.  Since v is constant, h must increase.

6 0
2 years ago
Read 2 more answers
Other questions:
  • Which types of orbitals are found in the principal energy level n = 3?
    11·2 answers
  • g Radiation of an unknown wavelength is used in a photoelectric effect experiment on a sodium surface. The maximum kinetic energ
    15·1 answer
  • Is Experience Nature or Nurture
    11·1 answer
  • In a generator, as the magnet spins, opposite poles of the magnet push the electrons in opposite directions. This back-and-forth
    8·2 answers
  • An airplane flies with a constant speed<br> of 720 km/h. How far can it travel in<br> 3 hours
    7·1 answer
  • During normal beating, a heart creates a maximum 3.95-mV potential across 0.305 m of a person’s chest, creating a 0.75-Hz electr
    15·1 answer
  • On what principle does a bottle opener work
    15·1 answer
  • The half-life of the radioactive isotope Carbon-14 is about 5730 years. Find N in terms of t. The amount of a radioactive elemen
    5·1 answer
  • A shopper walks westward 5.4 meters and then eastward 7.8 meters
    13·1 answer
  • __________ have become the most powerful distributors of information and news.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!