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tensa zangetsu [6.8K]
3 years ago
5

Which is the best procedure to make a permanent magnet

Physics
2 answers:
lukranit [14]3 years ago
3 0

Answer: Rub the rod with a piece of metal that is already magnetized. Or

Rub the rod with two magnets, drawing the north pole of one magnet from the center of the rod to one end while you draw the south pole of the other magnet in the opposite direction.

Explanation:

Bogdan [553]3 years ago
3 0

Answer:

B)  placing a magnetically hard material in a strong magnetic field

Explanation:

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A 0.080-kg remote control 22.0 cm long rests on a table, as shown in the figure below, with a length L overhanging its edge. To
Lesechka [4]
Base in your question that ask for the distance that the remote control would extend beyond the edge where as a remote control is 22cm long and has a mass of 0.08kg =, base on my calculation the answer would be 1.27cm i hope you understand my answer 
4 0
3 years ago
Why do you have to use a referance point to determine whether or not an object is in motion
SOVA2 [1]
Because there's no such thing as "really" moving.  
ALL motion is always relative to something.

Here's an example:
You're sitting in a comfy cushy seat, reading a book and listening 
to your .mp3 player, and you're getting drowsy.  It's so warm and 
comfortable, your eyes are getting so heavy, finally the book slips 
out of your hand, falls into your lap, and you are fast asleep.

-- Relative to you, the book is not moving at all.
-- Relative to the seat, you are not moving at all.
-- Relative to the wall and the window, the seat is not moving at all. 
-- But your seat is in a passenger airliner.  Relative to people on the 
    ground, you are moving past them at almost 500 miles per hour !
-- Relative to the center of the Earth, the people on the ground are moving
   in a circle at more than 700 miles per hour.   
-- Relative to the center of the Sun, the Earth and everything on it are moving
   in a circle at about 66,700 miles per hour !  

How fast are they REALLY moving ?
There's no such thing.
It all depends on what reference you're using. 
4 0
3 years ago
Read 2 more answers
A mass attached to the end of a spring is oscillating with a period of 2.25 s on a horizontal frictionless surface. The mass was
Rudiy27

Answer:

X=0.0389m

Explanation:

From the question we are told that:

Period of spring T_s=2.25s

Initial Position of Mass x=0.0480m

Final Mass period T_f=5.85s

Generally the equation for the Mass location is mathematically given by

X=xcos*\frac{2\pi T_s}{T_f}

X=0.048*cos*\frac{2\pi 5.85}{2.25}

X=0.0389m

7 0
3 years ago
Satuarated solution changes into unsatuarated by heating give reason​
Crazy boy [7]

Answer:

Due to application of heat on a saturated solution, the interparticle space increases due to increase in the kinetic energy of the particles which allows more solutes to dissolve in the solution thereby making it unsaturated.

4 0
3 years ago
A block with a mass of 31.8 kg is pushed on a frictionless
OlgaM077 [116]

Answer: Total work done on the block is 3670.5 Joules.

Step by step:

Work done:

W = F.d.\cos\theta

With F the force, d the displacement, and theta the angle of action (which is 0 since the block is pushed along the direction of displacement, and cos 0 = 1)

W = F.d

Given:

F = 75 N

m = 31.8 kg

Final velocity v_f = 15.3 \frac{m}{s}

In order to calculate the Work we need to determine the displacement, or distance the block travels. We can use the information about F and m to first figure out the acceleration:

F = ma\\\implies a=\frac{F}{m}=\frac{75 N }{31.8 kg}\approx 2.36 \frac{m}{s^2}\\

Now we can determine the displacement from the following formula:

d = \frac{1}{2}a^2+v_0t+d_0

Here, the initial displacement is 0 and initial velocity is also 0 (at rest):

d = \frac{1}{2}at^2\\

Now we still have "t" as unknown. But we are given one more bit of information from which this can be determined:

v_f = a\cdot t_f\\\implies t_f = \frac{v_f}{a} = \frac{15.2 \frac{m}{s}}{2.36 \frac{m}{s^2}}\approx 6.44 s

(using vf as final velocity, and tf as final time)

So it takes about 6.44 seconds for the block to move. This allows us to finally calculate the displacement:

d = \frac{1}{2}at^2=\frac{1}{2}2.36 \frac{m}{s^2}\cdot 6.44^2 s^2 \approx 48.94 m

and the corresponding work:

W = F\cdot d=75 N\cdot 48.94 m =3670.5J


7 0
3 years ago
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