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
Romashka-Z-Leto [24]
3 years ago
15

ASAP WILL GIVE BRAINLIEST Take a piece of paper, some nails and a magnet bar, place a magnet at the centre of the paper, and spr

inkle the nails. Observe what will happen to the nails and what other phenomena you can observe.
Physics
1 answer:
Zanzabum3 years ago
7 0

Answer: find the answer in the explanation

Explanation:

When a magnet is placed at the centre of the paper, and the nails are sprinkled on the paper, what will happen to the nails is that, the nails will form a pattern on the paper according to the magnetic field of the bar magnetic pole.

Other phenomena you can observe are:

1.) The nails will align themselves and show some lines of forces which is equivalent to the magnetic field lines

2.) The direction of the line of forces

3.) The strength of the magnetic field pole.

You might be interested in
There is a plate with moment of inertia Ip = 0.0711 kgm2 , rotating around its center of mass with angular speed of 4.53 rad/s.
Anna007 [38]

Answer:

1) their common angular speed = 3.038 rad/s

2) kinetic energy loss = 0.24J

Explanation:

1) This is a case of conservation of angular momentum.

The initial angular momentum must be equal to the final angular momentum

Initial angular momentum = I x w

Where I = moment of inertia, and

w = angular momentum.

Initial angular momentum = 0.0711 x 4.53 = 0.322 kg-m2-rad/s

After addition of ring, moment of inertia becomes,

0.0711 + 0.0353 = 0.106 kg-m2

Therefore, final angular momentum will be

0.106 x Wf

Where Wf = final common angular velocity

Equating the two angular momentum we have

0.322 = 0.106Wf

Wf = 0.322/0.106 = 3.038 rad/s

2) KE = 1/2 x I x w^2

Initial KE = 1/2 x 0.0711 x 4.53^2

= 0.729 J

Final KE = 1/2 x 0.106 x 3.038^2

= 0.489 J

Loss in KE = 0.729 - 0.489 = 0.24 J

5 0
4 years ago
A thin, 100 g disk with a diameter of 8.0 cm rotates about an axis through its center with 0.15 J of kinetic energy. What is the
butalik [34]

Answer:

v=2.45 m/s

Explanation:

The rotational kinetic energy is calculated with:

K=\frac{I\omega^2}{2}

The moment of inertia of a disk is:

I=\frac{mr^2}{2}

A point on the rim of a disk will have a speed of:

v=r\omega

Putting all together:

v=r\sqrt{\frac{2K}{I}}=r\sqrt{\frac{2(2K)}{mr^2}}=2\sqrt{\frac{K}{m}}

Which for our values is:

v=2\sqrt{\frac{0.15J}{0.1Kg}}=2.45m/s

3 0
4 years ago
Read 2 more answers
{WORTH BRAINLIEST WITH AN EXPLANATION} Janine is a police officer patrolling a street. She drives 2.2 km east, then 4.4 km west,
icang [17]

Answer:

Options (3) and (6)

Explanation:

Janine drives 2.2 km East.

Since, distances measured in the East are positive,

Displacement = 2.2 km

Then she drives 4.4 km west

Displacement = -4.4 km

Followed by 1.7 km in the East

Displacement = 1.7 km

Total displacement = 2.2 - 4.4 + 1.7 = -0.5 km

\overrightarrow{d}=-0.5 km

Total distance covered by Janine = 2.2 + 4.4 + 1.7 = 8.3 km

d = 8.3 km

Therefore, Options (3) and (6) will be the answer.

5 0
3 years ago
John pushes Hector on a plastic toboggan.The free-body diagram is shown. A free body diagram with 4 force vectors. The first vec
Simora [160]

Answer:

490

Explanation:

"i just did this "

6 0
4 years ago
5. YOU SHOULD USUALLY DRIVE SLOWER
saveliy_v [14]

Answer:

The answer is C.

Explanation:

If there are brake lights then you should drive slower.

3 0
3 years ago
Read 2 more answers
Other questions:
  • The minimum distance required to stop a car moving at 35.6 mi/h is 40.8 ft. What is the minimum stopping distance, in ft, for th
    6·1 answer
  • The four main systems of the Earth are
    9·2 answers
  • 1. What is the SI unit of emf?
    8·2 answers
  • If a gas has a volume of 1.25 L and a pressure of 1.75 atm, what will the pressure be if the volume is changed to 3.15 L?
    9·1 answer
  • Please help!!!
    6·1 answer
  • Einstein's theory of general relativity is currently the best explanation of gravity. Why has this theory not been replaced with
    15·1 answer
  • The diagram shows changes of state between solid, liquid, and gas. The atoms of a substance lose energy during a change of state
    7·2 answers
  • What happens to your breathing rate when you.a) exercise.b) go to sleep
    11·2 answers
  • Please help I need the answer ASAP.
    9·1 answer
  • HELP PLEASE (View Photo)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!