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3 years ago

What is the magnetosphere, and how does it help the earth?can someone plss help me???

Physics

1 answer:

mezya [45]3 years ago

7 0

What is the magnetosphere, and how does it help the earth?

The magnetosphere shields our home planet from solar and cosmic particle radiation, as well as erosion of the atmosphere by the solar wind - the constant flow of charged particles streaming off the sun. ... It is generated by the convective motion of charged, molten iron, far below the surface in Earth's outer core.

Explanation:

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If light is used to promote the electron, what are the selection rules for the initial and final spin and orbital angular moment

loris [4]

Answer:

(1) $\Delta S=0$

(2) $\Delta L=0, +1,-1$ but $J=0 to J=0$ transition not allowed.

Explanation:

Atoms can be described by the quantum number n, spin quantum number S, angular momentum quantum number L, and total angular momentum quantum number J. Based on approximation Russel- Saunders electron coupling, the atomic term symbol can be written as $L_{J} ^{2S+1}$ .

The conditions or selection rule to promoting the electron are discussed below:

(1) The total spin should not change that is $\Delta S=0$ .

(2) The total angular momentum change should be, $\Delta L=0, +1,-1$ but $J=0 to J=0$ transition not allowed.

8 0

4 years ago

A spring of negligible mass stretches 3.00 cm from its relaxed length when a force of 8.50 N is applied. A 0.600-kg particle res

gulaghasi [49]

Answer:

Spring constant, k = 283.33 N/m

Explanation:

Given that,

Force acting on the spring, F = 8.5 N

Stretching in the spring, x = 3 cm = 0.03 m

Let k is the spring constant of the spring. It can be calculated using Hooke's law as :

$F=-kx$

$k=\dfrac{F}{x}$

$k=\dfrac{8.5\ N}{0.03\ m}$

k = 283.33 N/m

So, the spring constant of the spring is 283.33 N/m. Hence, this is the required solution.

5 0

4 years ago

David lifts a book 1.2 meters from the floor to the top of his desk. If the book weighed 0.50 kg, what is the gravitational pote

Anika [276]

Answer:

5.886 J

Explanation:

Given:

The mass of the book is, $m=0.5$ kg

Height of lift is, $\Delta h=1.2$ m

Acceleration due to gravity is, $g=9.81$ m/s²

Now, gain in gravitational potential energy is a function of change in position and is given as:

$\Delta PE=mg\Delta h$

Here, $\Delta PE$ is the change in gravitational potential energy.

Plug in 0.5 kg for $m$ , 9.81 for $g$ and 1.2 for $\Delta h$ . Solve for $\Delta PE$

$\Delta PE=0.50\times 9.81\times 1.2=5.886\ J$

Therefore, the gain in gravitational energy of the book is 5.886 J.

7 0

4 years ago

Which do you think is easiest and hardest to keep track of: hazardous waste that is present as a gas, liquid, or solid? Why?

natima [27]

Answer:

probably liquid cause it can be contained easily

7 0

3 years ago

3. If 5/8" oriented strand board sheathing is nailed to the wood frame of a building with 8d common nails, how far does the poin

Naya [18.7K]

Answer:

The nail penetrates into the frame by 1.875 inches

Explanation:

For an 8d nail, it has a length of 2.5 inches, a diameter of 0.13 inches and a head diameter of 0.28125 inches. 8d nails in buildings are used in attaching studs to wall plate, rafter to top wall plates. It is also used when you need to drive a nail at an angle into a wood member.

Since the depth of an 8d nail is 2.5 inches and the sheathing is nailed on the wood frame, to get how far the point of the nail penetrate into the frame, we subtract the depth of the oriented strand board sheathing from the depth of an 8d nail.

Therefore, how far the point of the nail penetrate into the frame = 2.5 inches - 5/8 inches = (2.5 - 0.625) inches = 1.875 inches.

The nail penetrates into the frame by 1.875 inches

8 0

3 years ago

What is the magnetosphere, and how does it help the earth?can someone plss help me???​

What is the magnetosphere, and how does it help the earth?can someone plss help me???