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Elodia [21]
4 years ago
13

What are the 4 spheres that make up the earth

Physics
1 answer:
belka [17]4 years ago
3 0
The Four Spheres of Earth: Geosphere, Hydrosphere, Biosphere, and Atmosphere
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Complete each sentence with the correct type of lens.
andrey2020 [161]

Answer:

Convex and Concave

Explanation:

Took test.

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3 years ago
Describe how the pendulum works.
Vinil7 [7]

Answer:

A pendulum works by converting energy back and forth, a bit like a rollercoaster ride. When the bob is highest (furthest from the ground), it has maximum stored energy (potential energy). ... So as the bob swings (oscillates) back and forth, it repeatedly switches its energy back and forth between potential and kinetic.

6 0
3 years ago
Electric current is the flow of charged particles called blank .
uysha [10]

The electric current is measured in coulombs per second.<u> A flow of one coulomb per second is called one ampere</u>

7 0
3 years ago
Read 2 more answers
A mass that weight stretches a spring . The system is acted on by an external force . If the mass is pushed up and then released
olchik [2.2K]

Answer:

x = A cos wt

Explanation:

To determine the position we are going to solve Newton's second law

             F = m a

           

Spring complies with Hooke's law

          F = -k x

And the acceleration of defined by

          a = d²x / dt²

         

We substitute

        - k x = m d²x / dt²

         dx² / dt² + k/m  x = 0

Let's call

           w² = k / m

The solution to this type of differential equation is

           x = A cos (wt + Ф)

Where A is the initial block displacement and the phase angle fi is determined by or some other initial condition.

In this case the body is released so that at the initial speed it is zero

From which we derive this expression

         v = dx / dt = a w sin ( wt + Ф)

         

As the System is released for t = 0 the speed is v = 0

         v = sin Ф = 0

Therefore Ф = 0

And the equation of motion is

         x = A cos wt

4 0
3 years ago
What is the energy difference between parallel and antiparallel alignment of the z component of an electron's spin magnetic dipo
Readme [11.4K]

Answer:

\Delta U= 4.8204\times10^{-24} J

Explanation:

The difference between parallel and anti parallel alignment of the z component of an electron's spin magnetic dipole moment  is given by

U_1-U_2= (-\mu Bcos(\theta_2))-(-\mu Bcos(\theta_1))

where  μ= dipole moment B= strength of magnetic field and θ= angle between direction of magnetic field and dipole

here θ_2 and θ_1 are 180 and 0° respectively.

U_1-U_2= (\mu B)-(-\mu B)

U_1-U_2= 2\mu B

here μ is bohr magnetron or  magnetic moment of an electron = 9.27×10^{-24}

put this value we get

U_1-U_2= 2\times 9.27\times10^{-24}(0.26)

\Delta U= 4.8204\times10^{-24} J

3 0
3 years ago
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