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vekshin1
3 years ago
9

Opposite poles of different magnets will attract each other and like poles will repel each other. This is an example of which of

the following?lawhypothesistheory
Physics
2 answers:
sasho [114]3 years ago
6 0
The Law of Attraction or Theory of Magnetism
Stolb23 [73]3 years ago
4 0

Answer:

Explanation: Opposite poles of different magnets attract each other whereas same poles repel each each other this is an example of theory of magnetism and law of attraction that opposites attract. In case of magnets north- north and south- south poles repel each other while north-south and south - north attracts each other. Since earth is a big magnet and its magnetic north and south pole follows the same rule of attraction.

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Diffrence between vector and scalar
Rama09 [41]

Answer:

Vector has a direction and a magnitude, scalar only has a magnitude

Explanation:

5 0
3 years ago
When the pressure on a gas increases,what does the volume do?
kupik [55]

Answer:

As pressure goes up, volume goes down.

Explanation:

Pressure and volume of a gas are inversely proportional.  This means that as pressure goes up, volume goes down.  And as volume goes up, pressure goes down.

Cheers.

4 0
3 years ago
Read 2 more answers
A thin cylindrical shell and a solid cylinder have the same mass and radius. The two are released side by side and roll down, wi
Vitek1552 [10]

Answer:

Explanation:

Let the velocity be v

Total energy at the bottom

= rotational + linear kinetic energy

= 1/2 Iω² + 1/2 mv² ( I moment of inertia of shell  = mr² )

= 1/2 mr²ω² + 1/2 mv² ( v = ω r )

= 1/2 mv² +1/2 mv²

= mv²

mv² = mgh ( conservation of energy )

v² = gh

v = √gh

= √9.8 x 1.8

= 4.2 m /s

8 0
3 years ago
A system of pulleys is used to raise a load of bricks that weighs 1,700 newtons. The force applied to the pulley is 340 newtons.
Law Incorporation [45]
By definition, we have that the mechanical advantage is given by the following equation:
 MA =  \frac{W}{T} 

 Where,
 W: is the load
 T: is the tension
 Substituting the values in the given equation we have:
 MA = \frac{1700}{340}
 MA = 5

 Therefore, the mechanical advantage is equal to 5.
 Answer:
 The mechanical advantage of this machine is:
 MA = 5
4 0
3 years ago
Read 2 more answers
If the Earth and distant stars were stationary (motionless) in space, what would we observe about the wavelength from these star
torisob [31]
There's no such thing as "stationary in space".  But if the distance
between the Earth and some stars is not changing, then (A) w<span>avelengths
measured here would match the actual wavelengths emitted from these
stars. </span><span>

</span><span>If a star is moving toward us in space, then (A) Wavelengths measured
would be shorter than the actual wavelengths emitted from that star.

</span>In order to decide what's actually happening, and how that star is moving, 
the trick is:  How do we know the actual wavelengths the star emitted ?


 
7 0
3 years ago
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