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Kipish [7]
3 years ago
6

The sun emits a stream of energetic electrons and protons called the solar wind. These particles frequently get caught up in the

earth's magnetic field, traveling in spiral paths that take them toward the north or south magnetic poles. When they head northward and collide with atoms in the earth's upper atmosphere, those atoms emit light we know as the aurora borealis, or northern lights. These particles also interfere with radio reception. Why do they emit radio waves?
Physics
1 answer:
olya-2409 [2.1K]3 years ago
4 0

The sun emits a stream of energetic electrons and protons called the solar wind. When they head northward and collide with atoms in the earth's upper atmosphere, those atoms emit light we know as the aurora borealis, or northern lights. They emit radio waves because the spiraling electric charges are accelerating and thus producing changing electric and magnetic fields which results in the charges emitting electromagnetic waves

Explanation:

  • Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. EM waves are composed of oscillating magnetic and electric fields.
  • Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.
  • Electromagnetic waves are electric and magnetic fields traveling through empty space with the speed of light
  • A charged particle oscillating about an equilibrium position is an accelerating charged particle. If its frequency of oscillation is, then it produces an electromagnetic wave with the same oscillating frequency
  • Electromagnetic radiation is made when an atom absorbs energy. The absorbed energy causes one or more electrons to change their location within the atom. When the electron returns to its original position they produce an EM wave.
  • Electromagnetic waves have properties of speed, wavelength, and frequency
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Misha Larkins [42]
When sulphur burns it turns to sulphur dioxide
4 0
3 years ago
The neurons of giant squids, for example, consist of axons with very large radii, which allows the squid to react very quickly w
Alinara [238K]

Answer:

100

Explanation:

\rho_m = Resistivity of axon

r = Radius of axon

t = Thickness of the membrane

\rho_a = Resistivity of the axoplasm

Speed of pulse is given by

v=\sqrt{\dfrac{\rho_mrt}{2\rho_a}}

So, radius is given by

r=\dfrac{2\rho_a}{\rho_mt}v^2

If radius is increased by a factor of 10 new radius will be

r_2=\dfrac{2\rho_a}{\rho_mt}(10v)^2\\\Rightarrow r_2=100\dfrac{2\rho_a}{\rho_mt}v^2\\\Rightarrow r_2=100r

So, The radius will increase by a factor of 100.

5 0
4 years ago
Wat is the volume of a marble in mL?
rewona [7]
4/3 pi (radius)^3
If the radius is in cm the volume will be in mL
6 0
3 years ago
Plz help ASAP I'll mark as brainliest ​
gogolik [260]

Hi there!

1.

Hooke's law states that:

F = -kx

k = Spring constant (N/m)

x = DISPLACEMENT from equilibrium (m)

Essentially, the force of a spring is PROPORTIONAL to its spring constant and its displacement from its equilibrium point.

2.

The force of the spring (T) is not proportional to the spring's length (l), but rather its DISPLACEMENT from its equilibrium length. (Δl)

3.

The equilibrium length is where the force of the spring (T) = 0N. Looking at the graph, the line intersects this value at l = 30cm.

4.

We can begin by looking at the given graph.

When the spring force = 4N, the total length of the spring is 35 cm.

Now, the EQUILIBRIUM length is 30 cm, so the total elongation is:

35 - 30 = 5 cm.

5.1.

If the spring elongates by 10 cm, the total length of the spring is:

30 + 10 = 40 cm

According to the graph, a length of 40 cm corresponds to a force of 8N.

5.2.

We can solve for the weight of the ball using the following:

W (weight) = m (mass) · acceleration due to gravity (10N/kg)

Using a summation of forces:

∑F = T - W

The elongation that we are solving for occurs at the equilibrium point (net force = 0 N), so:

0 = T - W

T = W = 8 N

5.3.

0 = T - Mg

T = Mg

Use the prior value of T and gravity to solve:

8 = 10M

m = 0.8 kg

8 0
3 years ago
Two insulated wires, each 2.64 m long, are taped together to form a two-wire unit that is 2.64 m long. One wire carries a curren
nikklg [1K]

Answer:

4.77\ \text{A}

Explanation:

F = Magnetic force = 4.11 N

I_n = Net current

I_2 = Current in one of the wires = 7.68 A

B = Magnetic field = 0.59 T

\theta = Angle between current and magnetic field = 65^{\circ}

l = Length of wires = 2.64 m

I = Current in the other wire

Magnetic force is given by

F=I_nlB\sin\theta\\\Rightarrow I_n=\dfrac{F}{lB\sin\theta}\\\Rightarrow I_n=\dfrac{4.11}{2.64\times 0.59 \sin65^{\circ}}\\\Rightarrow I_n=2.91\ \text{A}

Net current is given by

I_n=I_2-I\\\Rightarrow I=I_2-I_n\\\Rightarrow I=7.68-2.91\\\Rightarrow I=4.77\ \text{A}

The current I is 4.77\ \text{A}.

8 0
3 years ago
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