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anastassius [24]
3 years ago
8

table 4.interaction between two permanent bar magnets what i did to the pair of magnets to cause interaction and observed the ef

fect/s ( attracted or repeled

Physics
2 answers:
Leni [432]3 years ago
6 0

A magnet is a substance which attracts or repels another substance. In a magnet, the atoms are aligned in a particular direction in domains. A magnet has two poles: North pole and South pole. The domains are oppositely aligned in unlike poles. Like poles repel each other where as unlike poles attract each other. Hence, when we bring like poles closer, repulsion would be experienced. In case of unlike poles, they would stick together.

yawa3891 [41]3 years ago
5 0

The two permanent magnets can interact with each other so that the two magnets are brought closer to the opposite poles so that they will attract each other

<h3>Further explanation </h3>

Magnets are objects that can attract other objects. Objects that are brought close to a magnet are attracted because they have a magnetic force

A magnetic field is a magnetic region that is still a magnetic force, so objects placed in a magnetic field will be attracted to a magnet

The strongest magnetic force is at the magnetic ends. This magnetic tip is called a magnetic pole consisting of the north pole and south pole

The magnetic north pole will point towards the north pole of the earth and the magnetic south pole will point towards the south pole of the earth.

Similar poles (north and south poles) will pull each other, while similar poles (north-north pole and south pole with the south) will repel each other

 

An iron or steel can be made into a magnet by rubbing, using an electric current or by induction.

Magnetic properties can be lost if magnets are heated or hit

Materials whose magnetic properties are easily lost are called temporary magnets such as iron and those that are hard to lose are called permanent magnets such as steel

The nature of materials that are exposed to or interact with magnets can give different responses. Some are drawn very strong, weak or even rejected. the nature of this material is classified into 3 namely ferromagnetic (easily drawn), paramagnetic (weakly drawn), and diamagnetic (slightly resisted)

So that the two permanent magnets can interact with each other, then the two magnets are brought closer to the opposite poles so that they will pull together

<h3>Learn more </h3>

The relationship between electric and magnetic fields

brainly.com/question/1594186

The direction of the magnetic field

brainly.com/question/7947588

Magnetic polish

brainly.com/question/843992

Keywords: magnetic poles, magnetic fields, north pole, south pole, repel, attract

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5 0
4 years ago
A 40 kg girl and an 8.4 kg sled are on the surface of a frozen lake, 15 m apart. By means of a rope, the girl exerts a 5.2 N for
stealth61 [152]

Answer:

(a) a_s=0.62\frac{m}{s^2}

(b) a_s=0.13\frac{m}{s^2}

(c) x_f=2.6m

Explanation:

(a) According to Newton's second law, the acceleration of a body is directly proportional to the force exerted on it and inversely proportional to it's mass.

a_s=\frac{F}{m_s}\\a_s=\frac{5.2N}{8.4kg}\\a_s=0.62\frac{m}{s^2}

(b) According to Newton's third law, the force that the sled exerts on the girl is equal in magnitude but opposite in the direction of the force that the girl exerts on the sled:

a_g=\frac{F}{m_g}\\a_g=\frac{5.2N}{40kg}\\a_g=0.13\frac{m}{s^2}

(c) Using the kinematics equation:

x_f=x_0+v_0t \pm  \frac{at^2}{2}

For the girl, we have x_0=0 and v_0=0. So:

x_f_g=\frac{a_gt^2}{2}(1)

For the sled, we have v_0=0. So:

x_f_s=x_0_s-\frac{a_st^2}{2}(2)

When they meet, the final positions are the same. So, equaling (1) and (2) and solving for t:

x_0_s-\frac{a_st^2}{2}=\frac{a_st^2}{2}\\t^2(a_g+a_s)=2x_0_s\\t=\sqrt{\frac{2x_s_0}{a_g+a_s}}\\t=\sqrt{\frac{2(15m)}{0.13\frac{m}{s^2}+0.62\frac{m}{s^2}}}\\t=6.32s

Now, we solve (1) for x_f_g

x_f_g=\frac{0.13\frac{m}{s^2}(6.32s)^2}{2}\\x_f_g=2.6m\\x_f=2.6m

5 0
3 years ago
Two identical metal spheres A and B are in contact. Both are initially neutral. 1.0× 10 12 electrons are added to sphere A, then
Vilka [71]

Answer:

8 x 10^-8 C on both the spheres.

Explanation:

Number of electrons added to A = 1 x 10^12

As the sphere A and B are identical to each other so the charge is shared equally.

Charge of one electron = 1.6 x 10^-19 C

Charge on A after wards

= number of electrons after wards x charge of one electron

qA = 0.5 x 10^12 x 1.6 x 10^-19 = 8 x 10^-8 C

Similarly, the charge on sphere B afterwards

= number of electrons after wards x charge of one electron

qB = 0.5 x 10^12 x 1.6 x 10^-19 = 8 x 10^-8 C

8 0
4 years ago
A moon orbits a planet every 42 hours with a mean orbital radius of .002819 AU. The mass of the moon is 8.932 x 1022 kg. Using N
Pepsi [2]

Answer:

The mass of the planet  is 1.9407\times10^{27}\ kg

Explanation:

Given that,

Time period = 42 hours = 151200 sec

Orbital radius = 0.002819 AU = 421716397.5 m

Mass of moon m=8.932\times10^{22}\ kg

We need to calculate the mass of the planet

Using Kepler’s third law

T^2\propto a^3

T^2=\dfrac{4\pi^2}{G(M+m)}\times a^3

Where, a = orbital radius

T = time period

G = gravitational constant

M = mass of moon

m = mass of planet

Put the value into the formula

(151200)^2=\dfrac{4\pi^2}{6.673\times10^{-11}(8.932\times10^{22}+m)}\times(421716397.5)^3

(8.932\times10^{22}+m)=\dfrac{4\pi^2}{6.673\times10^{-11}}\times\dfrac{(421716397.5)^3}{(151200)^2}

(8.932\times10^{22}+m)=1.94087\times10^{27}

m=1.94087\times10^{27}-8.932\times10^{22}

m=1.9407\times10^{27}\ kg

Hence, The mass of the planet  is 1.9407\times10^{27}\ kg

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galina1969 [7]
In optics, a diffraction grating is an optical component with a periodic structure, which splits and diffracts light into several beams travelling in different directions.
4 0
3 years ago
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