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lisabon 2012 [21]
3 years ago
5

What is gravity at north pole, South pole and at different point on the equatorial regions. Give reasoning for your answers why

do you think it is different or same. Can you imagine same concept for the electric charge, yes or No
Physics
1 answer:
Radda [10]3 years ago
4 0

Answer:

The gravity at Equator is 9.780 m/s2 and the gravity at poles is 9.832 m/s2. The gravity at poles are bigger than at equator, principally because the Earth is not totally round. The gravity is inversely proportional to the square of the radius, that is the reason for the difference of gravity (The radius at Poles are smaller than at Equator).

If Earths would have a net charge Q. The Electric field of Earth would be inversely proportional to the square of the radius of Earth (Electric field definition for a charge), the same case as for gravity. So there would be a difference between the electric field at poles and equator, too.

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What is the frequency of a wave with a speed of 45 m/s and a wavelength of 2.5 m
mart [117]

Answer:

.05

Explanation:

wavelength/frequency = wave speed

45 = 2.5/x

x = 0.05

5 0
3 years ago
River water held behind a dam is a form of ________. group of answer choices
WINSTONCH [101]

Potential energy is present in the river water behind a dam.

<h3>How is potential energy defined?</h3>
  • Potential energy is a form of stored energy that is dependent on the relationship between different system components.
  • When a spring is compressed or stretched, its potential energy increases.
  • If a steel ball is raised above the ground as opposed to falling to the ground, it has more potential energy.
  • The object's mass, its mass in relation to some reference points, and the gravitational field it is in all affect the potential energy of the object.
  • Joule is the SI unit of potential energy as a result (J)
  • As weight and height increase, gravitational potential energy rises.

learn more about Potential energy here

brainly.com/question/13997830

#SPJ4

8 0
2 years ago
A solenoidal coil with 25 turns of wire is wound tightly aroundanother coil with 300 turns. The inner solenoid is 25.0 cm long a
Aneli [31]

Answer:

(a). The average magnetic flux through each turn of the inner solenoid is 5.68\times10^{-8}\ Wb

(b). The mutual inductance of the two solenoids is 1.183\times10^{-5}\ H

(c). The emf induced in the outer solenoid by the changing current in the inner solenoid is -0.0207 V.

Explanation:

Given that,

Number of turns of coil = 25

Number of turns of another coil = 300

Length = 25.0 cm

Diameter = 2.00 cm

Current = 0.120 A

Rate \dfrac{di_{2}}{dt}=1.75\times10^{3}\ A/s

(a). We need to calculate the magnetic field due to inner solenoid

Using formula of magnetic field

B=\mu_{0}(\dfrac{N_{2}}{l})I

Put the value into the formula

B=4\pi\times10^{-7}\times(\dfrac{300}{0.25})\times0.120

B=1.81\times10^{-4}\ T

We need to calculate the average magnetic flux through each turn of the inner solenoid

Using formula of magnetic flux

\phi=B\cdot A

Put the value into the formula

\phi=1.81\times10^{-4}\times\pi\times (1.00\times10^{-2})^2

\phi=5.68\times10^{-8}\ Wb

The average magnetic flux through each turn of the inner solenoid is 5.68\times10^{-8}\ Wb

(b). We need to calculate the mutual inductance of the two solenoids

Using formula of mutual inductance

M=\dfrac{N_{1}\phi}{i_{1}}

Put the value into the formula

M=\dfrac{25\times5.68\times10^{-8}}{0.120}

M=0.00001183\ H

M=1.183\times10^{-5}\ H

The mutual inductance of the two solenoids is 1.183\times10^{-5}\ H

(c).  We need to calculate the emf induced in the outer solenoid by the changing current in the inner solenoid

Using formula of emf

\epsilon=-M\dfrac{di_{2}}{dt}

Put the value into the formula

\epsilon=-1.183\times10^{-5}\times1.75\times10^{3}

\epsilon=-0.0207\ V

The emf induced in the outer solenoid by the changing current in the inner solenoid is -0.0207 V.

Hence, (a). The average magnetic flux through each turn of the inner solenoid is 5.68\times10^{-8}\ Wb

(b). The mutual inductance of the two solenoids is 1.183\times10^{-5}\ H

(c). The emf induced in the outer solenoid by the changing current in the inner solenoid is -0.0207 V.

5 0
3 years ago
What is a gravitational field, and how does it apply to Earth? what is its formula​. and what is an example of how you can use i
tankabanditka [31]

Answer:

Explanation:

a gravitational field is the region of space surrounding a body in which another body experiences a force of gravitational attraction.

The formula is: weight/mass = gravitational field strength. On Earth the gravitational field strength is 10 N/kg.

an example of how you can use it if you need to find the gravitational force from earth.

3 0
3 years ago
Which of the following statements best explains why a book resting on a table is in equilibrium?
timofeeve [1]
I'm pretty sure the answer is d.The weight of the book and the table's upward force on the book are equal in magnitude but opposite in direction.

3 0
3 years ago
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