All categories

3 years ago

The strength of a magnetic field follows _____.

Physics

2 answers:

ycow [4]3 years ago

8 0

I think its Coulomb's law<span>
</span>

Orlov [11]3 years ago

5 0

Answer: The correct answer is "law of poles".

Explanation:

Magnetic field lines: These are the area around the magnet in which the magnetic force can be experienced. The strength of the magnetic field is stronger at the poles of the magnet. It decreases from the poles.

The direction of the magnetic field lines is from north pole to south pole.

Law of poles: The same poles of the magnets repel each other with magnetic force of repulsion between the poles.

The opposite poles of the magnets attract each other with the magnetic force of attraction between the poles.

The strength of the magnetic field does not follow an inverse square law. The force from the magnet decreases faster than an inverse square law because all magnets have two opposite poles and single pole does not exist.

Therefore, The strength of a magnetic field follows law of poles.

You might be interested in

A bus is moving and has 500000 joules of kinetic energy. The brakes are applied and the bus stops. How much work is needed to st

Bad White [126]

For the work-energy theorem, the work needed to stop the bus is equal to its variation of kinetic energy:
$W=K_f - K_i$
where
W is the work
Kf is the final kinetic energy of the bus
Ki is the initial kinetic energy of the bus

Since the bus comes at rest, its final kinetic energy is zero: $K_f = 0$ , so the work done by the brakes to stop the bus is
$W=-K_i = -500000 J$
And the work done is negative, because the force applied by the brake is in the opposite direction to that of the bus motion.

8 0

2 years ago

Whether calculating speed or acceleration, this data is required

Roman55 [17]

If an object is changing it is called velocity - whether by a constant amount or a varying

8 0

3 years ago

A falling skydiver has a mass of 105 kg. What is the magnitude of the skydiver's acceleration when the upward force of air resis

LenKa [72]

F-free = m*g - F_air = m*a

F_air = 1.2 * m

a= (105 kg * 9.8 m.s^2 - 5*105) / 105 kg

a = 9.3 m/s

Hope this helps

7 0

3 years ago

A book is sliding along a desk top. Because the book is in motion ,you know that the forces acting on the book are A. Balanced B

Virty [35]

Just because the book is moving doesn't tell you anything about the forces on it, or even whether there ARE any.

Just look at Newton's first law of motion, and this time, let's try and THINK about it too. It says something to the effect that any object continues in constant, uniform MOTION ..... UNLESS acted on by an external force.

4 0

3 years ago

A worker drives a 0.562 kg spike into a rail tie with a 2.26 kg sledgehammer. The hammer hits the spike with a speed of 64.4 m/s

zubka84 [21]

Answer:

Explanation:

Given that,

Mass of sledge hammer;

Mh =2.26 kg

Hammer speed;

Vh = 64.4 m/s

The expression fot the kinetic energy of the hammer is,

K.E(hammer) = ½Mh•Vh²

K.E(hammer) = ½ × 2.26 × 64.4²

K.E ( hammer) = 4686.52 J

If one forth of the kinetic energy is converted into internal energy, then

ΔU = ¼ × K.E(hammer)

∆U = ¼ × 4686.52

∆U = 1171.63 J

Thus, the increase in total internal energy will be 1171.63 J.

4 0

3 years ago