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3 years ago

Explain two ways of magnetising an object

Physics

1 answer:

Nina [5.8K]3 years ago

5 0

Answer:

There are two methods generally used to magnetize permanent magnets: static magnetization and pulse magnetization.

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How do oxygen and beryllium atoms transform into oxygen ion O2- and Be2 beryllium ion Be2? tysm

Hoochie [10]

On the whole, the metals burn in oxygen to form a simple metal oxide. Beryllium is reluctant to burn unless it is in the form of dust or powder. Beryllium has a very strong (but very thin) layer of beryllium oxide on its surface, and this prevents any new oxygen getting at the underlying beryllium to react with it.

7 0

3 years ago

Read 2 more answers

Fill in the blanks

just olya [345]

Answer:

An atom that loses a electron is called a cation and has an overall positive charge.

4 0

4 years ago

A train of mass 5.6 × 10^5kg is at rest in a station.at time t=0s, a resultant force acts on the train and it starts to accelera

lana66690 [7]

Answer:

420000N

Explanation:

Given parameters:

Mass of the train = 5.6 x 10⁵kg

Acceleration = 0.75m/s²

Unknown:

Resultant force = ?

Solution:

According to newton's second law, force is the product of mass and acceleration;

Force = mass x acceleration

Resultant force that acts on the train is given below;

Force = 5.6 x 10⁵kg x 0.75m/s² = 420000N

7 0

3 years ago

Which wave would produce a standing wave when combined with the original one

Elden [556K]

Answer:

When original wave superimpose with its own reflected wave travelling in opposite direction then it will produce standing wave

Explanation:

Let say the equation of original wave is

$y_i = A sin(\omega t + kx)$

now the equation of its reflected wave which is reflected 100% is given as

$y_r = A sin(\omegat - kx)$

now by superposition of above two waves we will have

$y = y_i + y_r$

$y = A { sin(\omega t + kx) + sin(\omega t - kx)}$

$y = 2Asin(\omega t)cos(kx)$

so above shows the equation of standing wave

so we can say that When original wave superimpose with its own reflected wave travelling in opposite direction then it will produce standing wave

3 0

3 years ago

Read 2 more answers

A spring stretches 0.018 m when a 2.8-kg object is suspendedfrom its end. How much mass should be attached to this spring sothat

agasfer [191]

Answer:

m = 4.29 kg

Explanation:

Given that,

Mass of the object, m = 2.8 kg

Stretching in the spring, x = 0.018 m

Frequency of vibration, f = 3 Hz

Let m is the mass of the object that is attached to the spring. When it is attached the gravitational force is balanced by the force on spring. It is given by :

$mg=kx$