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
NikAS [45]
3 years ago
6

In which application is a magnet used to store information?

Physics
2 answers:
galina1969 [7]3 years ago
6 0

Answer:

d the disk in a computer hard drive

Explanation:

because hard drive use magnetic memory tostore giga- and terabytes of data in computer.

tatiyna3 years ago
3 0

Answer:

D. The disk in a computer hard drive

<em>The</em><em> </em><em>disk</em><em> </em><em>has</em><em> </em><em>a</em><em> </em><em>magnetic</em><em> </em><em>coating</em><em> </em><em>in</em><em> </em><em>which</em><em> </em><em>the</em><em> </em><em>infor</em><em>mation</em><em> </em><em>is</em><em> </em><em>stored </em><em>on</em><em> </em><em>the</em><em> </em><em>magnetic</em><em> </em><em>strips</em><em>.</em>

You might be interested in
A long thin uniform rod of length 1.50 m is to be suspended from a frictionless pivot located at some point along the rod so tha
Dvinal [7]

Answer:

0.087 m

Explanation:

Length of the rod, L = 1.5 m

Let the mass of the rod is m and d is the distance between the pivot point and the centre of mass.

time period, T = 3  s

the formula for the time period of the pendulum is given by

T = 2\pi \sqrt{\frac{I}{mgd}}    .... (1)

where, I is the moment of inertia of the rod about the pivot point and g is the acceleration due to gravity.

Moment of inertia of the rod about the centre of mass, Ic = mL²/12

By using the parallel axis theorem, the moment of inertia of the rod about the pivot is

I = Ic + md²

I = \frac{mL^{2}}{12}+ md^{2}

Substituting the values in equation (1)

3 = 2 \pi \sqrt{\frac{\frac{mL^{2}}{12}+ md^{2}}{mgd}}

9=4\pi^{2}\times \left ( \frac{\frac{L^{2}}{12}+d^{2}}{gd} \right )

12d² -26.84 d + 2.25 =  0

d=\frac{26.84\pm \sqrt{26.84^{2}-4\times 12\times 2.25}}{24}

d=\frac{26.84\pm 24.75}{24}

d = 2.15 m , 0.087 m

d cannot be more than L/2, so the value of d is 0.087 m.

Thus, the distance between the pivot and the centre of mass of the rod is 0.087 m.

3 0
3 years ago
An inventor claims to have developed a power cycle having a thermal efficiency of 40%, while operating between hot and cold rese
lesya [120]

From Carnot's theorem, for any engine working between these two temperatures:


efficiency <= (1-tc/th) * 100


Given: tc = 300k (from question assuming it is not 5300 as it seems)

For a, th = 900k, efficiency = (1-300/900) = 70%

For b, th = 500k, efficiency = (1-300/500) = 40% 

For c, th = 375k, efficiency = (1-300/375) = 20% 


Hence in case of a and b, efficiency claimed is lesser than efficiency calculated, which is valid case and in case of c, however efficiency claimed is greater which is invalid. 

7 0
3 years ago
Which kind of energy transformation occurs during skydiving? A) mechanical to gravitational B) gravitational to kinetic C) kinet
Aleks [24]

B) gravitational to kinetic

Explanation:

The skydiver, when he is located at a certain height h above the ground, possesses gravitational potential energy, equal to:

U=mgh

where m is the mass of the skydiver, g is the gravitational acceleration and h is the height above the ground. As he falls, its height h decreases, while his speed v increases, so part of the gravitational potential energy is converted into kinetic energy, which is given by

K=\frac{1}{2}mv^2

so, we see that as v increases, the kinetic energy increases. Therefore the correct answer is

B) gravitational to kinetic

7 0
3 years ago
Read 2 more answers
What is the torque τb about axis b due to the force f⃗ ? (b is the point at cartesian coordinates (0,b), located a distance b fr
yKpoI14uk [10]
Check the attached file for the solution.

8 0
3 years ago
What are 3D glasses made of?
True [87]
<span>two filters with vertical polarization</span>
5 0
3 years ago
Other questions:
  • The liquid electrolyte in the battery typically takes what kind of net charge?
    14·1 answer
  • A car traveled 1025 km from El Paso to Dallas iin 13.5 hr. What was its average velocity
    6·1 answer
  • The maximum oxygen uptake is known as the
    11·1 answer
  • ¿Que es un átomo???????
    9·1 answer
  • The primary colors of light are?
    10·2 answers
  • In a front-end collision, a 1500 kg car with shock-absorbing bumpers can withstand a maximumforce of 80 000 N before damage occu
    8·1 answer
  • What is the chemical formula for copper (I) sulfide? A) CuS B) CuS2 C) Cu2S D) Cu2S3
    7·2 answers
  • The primary coil of a transformer contains 100 turns; the secondary has 200 turns. The primary coil is connected to a size aa ba
    14·1 answer
  • A driver is traveling along a straight road at the speed limit of 60 mph. After two minutes, she slows at a constant rate to a s
    13·1 answer
  • How much kinetic energy does an 8 kg bowling ball have when it is thrown 9 m/s. down the alley
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!