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3 years ago

The moving charge in the wire causes the compass to deflect; this is because

Physics

2 answers:

Marta_Voda [28]3 years ago

6 0

Answer:

The moving charge induces a magnetic field

Explanation:

According to <u>Faraday's Law</u>, <em>the moving charges in a closed circuit (conductor) induces a magnetic field</em>.

There is a potencial difference called electromotive force, wich is proportional to the magnetic flux through a surface. Matematically this coud be written as

$\epsilon = -\frac{d\Phi}{dt}$

<em>where $\epsilon$ is the EMF, and $\Phi$ is the magnetic flux</em> (the derivative on t means that the magnetic flux is changing in time).

This means that the moving charges, generates an EMF that is proportional to the magnetic flux change.

Therefore, A is the correct answer.

JulijaS [17]3 years ago

5 0

The answer is A. the moving charge induces a magnet field .

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How did harlow shapley conclude that the sun was not in the center of the milky way galaxy?

timurjin [86]

We learned that We are in the disk of the Galaxy, about 5/8 of the way from the center.

<h3>What is the work of Harlow Shapley?</h3>

Shapley, who was headquartered in Boulder, Colorado, used Cepheid variable stars to estimate the size of the Milky Way Galaxy and its position relative to the Sun. In 1953, he published his "liquid water belt" theory, today known as the concept of a livable zone.

There are many stars, grains of dust, and gas in the Milky Way. It is known as a spiral galaxy because, from the top or bottom, it would appear to be whirling like a pinwheel. About 25,000 light-years from the galaxy's nucleus, the Sun is situated on one of the spiral arms.

Approximately 5/8 of the way from the galaxy's nucleus, we are in the disc. William Herschel believed that the Sun and Earth were about in the middle of the vast cluster of stars known as the Milky Way.

To learn more about Harlow Shapley's original estimate go to - brainly.com/question/28145909

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3 0

2 years ago

In the far future, astronauts travel to the planet Saturn and land on Mimas, one of its 62 moons. Mimas is small compared with t

Mamont248 [21]

Answer:

a) $h_{max}=14536.16 m$

b) $h = 15687.9 m$

c) $PD=7.62\%$ The estimate is low.

Explanation:

a) Using the energy conservation we have:

$E_{initial}=E_{final}$

we have kinetic energy intially and gravitational potential energy at the maximum height.

$\frac{1}{2}mv^{2}=mgh_{max}$

$h_{max}=\frac{v^{2}}{2g}$

$h_{max}=\frac{43^{2}}{2*0.0636}$

$h_{max}=14536.16 m$

b) We can use the equation of the gravitational force

$F=G\frac{mM}{R^{2}}$ (1)

We have that:

$F = ma$ (2)

at the surface G will be:

$G=\frac{gR^{2}}{M}$

Now the equation of an object at a distance x from the surface.

is:

$F=\frac{mgR^{2}}{(R+x)^{2}}$

$m\frac{dv}{dt}=\frac{mgR^{2}}{(R+x)^{2}}$

Using that dv/dt is vdx/dt and integrating in both sides we have:

$v_{0}=\sqrt{\frac{2gRh}{R+h}}$

$h=\frac{v_{0}^{2}R}{2gR-v_{0}^{2}}$

$h=15687.9$

c) The difference is:

So the percent difference will be:

$PD=|\frac{14536.16-15687.9}{(14536.16+15687.9)/2}*100%$

$PD=7.62\%$

The estimate is low.

I hope it helps you!

7 0

3 years ago

Suppose you must design an experiment to test how a paper airplane's shape affects the distance it will fly. Your plane must fly

Rina8888 [55]

Answer:

Explanation:

Your plane must fly halfway across your classroom to get the best grade. The teacher reminds you to use both imagination and logical reasoning in your design. Write a procedure for an experiment that tests how a paper airplane's shape affects the distance it will fly. Then, describe how you might use both ...

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3 years ago

Read 2 more answers

An 835 kg dragster accelerates from rest to 110 km/h in 0.90 seconds.

sveticcg [70]

Answer

given,

mass of the dragster = 835 Kg

initial speed, u = 0 m/s

final speed, v = 110 km/h = 110 x 0.278 = 30.58 m/s

time, t = 0.90 s

a) Change in momentum

Δ P = m v - m u

Δ P = 835 x ( 30.58 - 0 )

Δ P = 25534.3 kg.m/s

b) average force exerted on the car

change in momentum = Force x time

25534.3 = F x 0.9

F = 28371.44 N

c) The exerted force is due to friction because the motion of the dragster is because of friction.

8 0

3 years ago

Mp of Nacl and HCl are 801°c and -115°c respectively. Explain

muminat

Answer:

sodium and chlorine have a large difference in electronegativity (the ability of an element to pull on electrons), resulting in a big difference in electron sharing, producing a molecule with a large “dipole moment” or polarity. The polarity means that the components (ions, in this case) are REALLY attracted to each other, and are so attracted that they stick together (in this case, in a crystal lattice). It takes a LOT of energy to get them to loosen this lattice and melt. All that energy = high temperature.

hydrogen and chlorine don’t have such a large difference in electronegativity, therefore

not as much polarity

the parts aren’t as attracted to each other

takes less energy to melt the solid

lower mP.Explanation:

4 0

3 years ago