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Answer:

I think the question is to define magnetic field of SOLENOID.

Explanation:

The magnetic field inside a solenoid is proportional to both the applied current and the number of turns per UNIT LENGTH. There is no dependence on the DIAMETER of the solenoid, and the field strength doesn't depend on the position inside the solenoid, i.e., the field inside is constant

Solenoid Magnetic Field Calculation

For a solenoid of length L = m with N = turns, the turn density is n=N/L= turns/m. B = Tesla = GAUSS. The Earth's magnetic field is about half a gauss.

ANSWER:

because it APPLIES EQUAL and OPPOSITE REACTION

EXPLANATION:

the product of 1.23 and 35.73 is 43.9479

and UPTO 3 SIGNIFICANT figures it will be 43.1

Answer:

We know that the magnetic flux GENERATED by an electromagnetic COIL is the amount of magnetic field or lines of force produced within a given area and that it is more commonly called “Flux Density”. Given the symbol B with the unit of flux density being the Tesla, T.

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We also know from the previous tutorials that the magnetic strength of an electromagnet depends upon the number of turns of the coil, the CURRENT flowing through the coil or the type of core material being used, and if we increase either the current or the number of turns we can increase the magnetic field strength, symbol H.

Previously, the relative permeability, symbol μr was DEFINED as the ratio of the absolute permeability μ and the permeability of free space μo (a vacuum) and this was given as a constant. However, the relationship between the flux density, B and the magnetic field strength, H can be defined by the fact that the relative permeability, μr is not a constant but a function of the magnetic field intensity thereby giving magnetic flux density as:  B = μ H.

Then the magnetic flux density in the material will be increased by a larger factor as a result of its relative permeability for the material compared to the magnetic flux density in vacuum, μoH and for an air-cored coil this relationship is given as:



So for ferromagnetic materials the ratio of flux density to field strength ( B/H ) is not constant but varies with flux density. However, for air cored coils or any non-magnetic medium core such as woods or plastics, this ratio can be considered as a constant and this constant is known as μo, the permeability of free space, ( μo = 4.π.10-7 H/m ).

By plotting values of flux density, ( B ) against the field strength, ( H ) we can produce a set of curves called Magnetisation Curves, Magnetic Hysteresis Curves or more commonly B-H Curves for each type of core material used as shown below.

Explanation:

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Answer:

5

Explanation:

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ANSWER:

Answer :

p=a-t²/bx

ML-1T-²=a-(T) ²/b(L)

Ml-1t-2-a-t²

ML-1=a

ml-²T-²=b

ANSWER:

APPROX answer is 43.950 .

ANSWER:

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Explanation:

PASCAL's principle underlies the operation of the hydraulic press. The hydraulic press does not VIOLATE energy conservation, because a decrease in distance moved COMPENSATES for the increase in force.

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Answer:

Sentence 1 is an EXAMPLE of a SIMPLE sentence and sentence 2 is compound because" so " is considered a coordination conjugation in English,and sentence 3 is COMPLEX

ANSWER:

Gravity force and PUSH force

Explanation:

EARTH has gravity force and the MAN has the POWER to apply push force

Becauase that SCHOOL is WASTE.

ANSWER:

The change of electric potential with respect to distance is called potential gradient. It is denoted by dv/dx. hence, the NEGATIVE of potential gradient is EQUAL with electric FIELD intensity.

ANSWER:

the answer will be 6.00 OK FRIEND

s=ut+at^2/2

50=35t-gt^2/2

50=35t-5t^2

Solving for t we GET t= -2 or +5

Discard NEGATIVE VALUE we get t=5 SEC

ANSWER:

Newton's Second Law of Motion says that acceleration (gaining speed) happens when a FORCE acts on a mass (object).

I) RIDING your bicycle is a good example of this law of motion at your DAILY life.When you push on the pedals, your bicycle accelerates. You are increasing the speed of the bicycle by applying force to the pedals.

ii) If you use the same force to push a truck and push a car, the car will have more acceleration than the truck, because the car has less mass.

Explanation:

I HOPE it is correct and it will help you.

EXPLANATION:

There are three forces acting on the rider and bicycle. The weight of the rider and bicycle, W, acts vertically downward from their center of gravity. The NORMAL FORCE, N, of the road acts vertically upward from a point below the center of gravity. And the frictional force, F, of the road acts horizontally to the left.

ANSWER:

Newton's First Law of MOTION states that a body at rest will REMAIN at rest unless an outside force acts on it, and a body in motion at a constant velocity will remain in motion in a straight line unless acted upon by an outside force.

If a body experiences an acceleration ( or deceleration) or a change in direction of motion, it must have an outside force ACTING on it. Outside forces are sometimes called net forces or unbalanced forces.

The SECOND Law of Motion states that if an unbalanced force acts on a body, that body will experience acceleration (or deceleration), that is, a change of speed.

So, Outside forces are sometimes called net forces. If net force acting on a moving body is zero, the body will be at a constant velocity. Thus Newton's first law of motion can be obtained from the second law of motion.

Explanation:

Formula

According to Newton second law

F= ma

F=m(v-u)/t

Ft=mv-mu

If

F=0 and v=u

the object continues to move with uniform velocity.

If

F= 0 v= 0 and u is also equal to 0 then the object is at rest.

The force due to FRICTION will be equal to 0.4 N

Explanation:

• From the definition of force, we know

• F = ma

• We also know that , a = (Vi-Vf)/t

• PUTTING the value in above EQUATION, we get

• F = m x (Vi-Vf)/t)

• Putting the value

• F = 200 x (20-10)/5

• F = 400 gms-2

• We need to convert it to KG to MAKE Neuton

• F = 0.4 kgms-2/ 0.4 N

Learn more about frictional force from the link below

brainly.in/question/4679475

ANSWER:

If we have solid SODIUM chloride and concentrated sulphuric ACID then an acid/base reaction occurs. Steamy fumes of hydrogen choride gas are OBSERVED. The other product is sodium hydrogen SULPHATE NaHSO4 . This forms the basis of the laboratory preparation of hydrogen chloride gas.

Answer:

the surface will turn brown and COPPER will be formed

(REVERSE reaction will TAKE PLACE)

HOPE it helped you....

Answer:

Solution : (a) As speed - TIME graph OA is a straight LINE with a positive slope , the motion is uniformly ACCELERATED motion.

Explanation:

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Answer:

one

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Newton's First LAW of Motion states that a body will stay at rest or continue its path with constant velocity unless an EXTERNAL force acts upon it. ... By definition, then, there is constant velocity (possibly constant ZERO velocity). Thus, it seems that Newton's Second Law of Motion leads to the First Law.

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ANSWER:

4 is the CORRECT answer gahahahha

Answer

GIVEN -

u = 50 km/hr

v = 0 km/hr ( because CAR is stopped)

s = 6 m

where

u is initial velocity

v is final velocity

s is distance TRAVELLED.

━━━━━━━━━━━━━

To find -

Distance when initial velocity is 100 km

━━━━━━━━━━━━━

Formula used -

Third equation of motion -

v² = u² + 2as

━━━━━━━━━━━━━

Solution -

u = 50 km/hr

v = 0 km/hr

s = 6m

Substituting the value -

v² = u² + 2as

0 = (50)² + 2 × a × 6

a = -58 m/s²

━━━━━━━━━━━━━

u = 100 km/hr = 27.7 m/s

v = 0

a = -58 m/s²

Substituting the value

v² = u² + 2as

0 = (27.7)² - 2 × 58 × s

s = 6.6 m

━━━━━━━━━━━━━

Thanks

ANSWER:

FLASE

Explanation:

Answer:

2

Explanation:

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Answer:

Yes it Is correct ok na I THINK it is USEFUL to you

ANSWER:

BRO its 1278459 it,s easy U can ask SOMETHING difficult

Answer:

Answer. Because a water pump is BASED on the principle of ATMOSPHERIC PRESSURE. Atmospheric pressure cannot push up water up to 10 metre high.

POWER = current x voltage

= 12 x 2

= 24 watt

electrical energy = power x time

= 24 x 30/60

= 12 W hr

ANSWER:

The NUMBER of SIGNIFICANT FIGURES is 4

Explanation:

ANSWER

v

1

=U

1

i

^

−gt

J

^

v

2

=−u

2

i

^

−gt

j

^

forv

1

⊥v

2

v

ˉ

1

.

v

ˉ

2

=0

(u

1

i

^

−gt

j

^

).(−u

2

i

^

−gt

j

^

)=0

−u

1

u

2

+g

2

t

2

=0

g

2

t

2

=u

1

u

2

t=

g

u

1

u

2

Answer:

Electric POWER GIVES us electricity and it is very important but SOMETIMES it is very HARMFUL when the power came and we touch the wire and shock came and we can dir

Answer:

When solids are heated they emit all wavelengths of LIGHT (a continuous spectrum). ... When gasses are heated they emit only certain wavelengths of light (an emission line spectrum). Different gasses emit different wavelengths. A cool OBJECT (gas or solid) can absorb some of the light passing through it.

tomic emission spectra are produced when excited electrons return to the ground state. When electrons return to a lower energy level, they emit energy in the form of light.

A rainbow is an example of a continuous spectrum. Here, the colors displayed are within the visible spectrum (between 380-760 nm). Light in this wavelength range is visible to the naked eye. Unlike the visible spectrum, light that is of different wavelengths (see the ELECTROMAGNETIC spectrum below) is not visible. Looking at Figure \(\PageIndex{1}\), note the different areas of the light (or electromagnetic spectrum). Areas of light that possess short wavelengths are located on the left of the spectrum. All wavelengths from UV (ultraviolet) to \(γ\) (gamma) range have the potential to ionize tissues and/or DNA. As a result, INDIVIDUALS who have been exposed to large amounts of these types of radiation in acute time periods could develop CANCER. In contrast, visible light (see the rainbow area in Figure \(\PageIndex{1}\)) and radiation on the right side of the spectrum has longer wavelengths and does not have the potential to ionize tissues and/or DNA. Visible, infrared (labeled IR), microwave, and radio waves are classified as being nonionizing radiation and have not been linked to cancer.

Explanation:

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Explanation:

Mass of the girl, m=50kg

Diameter of the heel, d=1cm=0.01m

Radius of the heel, R=

2

d

=0.005m

Area of the heel =πr

2

=π×(0.005)

2

=7.85×10

−5

m

2

FORCE EXERTED by the heel on the FLOOR:

F=mg

=50×9.8

=490N

Pressure exerted by the heel on the floor:

P=

Area

Force

=490/(7.85×10

−5

)=6.24×10

6

N/m

2

Therefore, the pressure exerted by the heel on the HORIZONTAL floor is 6.24×10

6

N/m

2

.

ANSWER:

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c

c

c

c

c

cc

c

c

c

c

c

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ANSWER:

<P>Answer:

Concave mirror produced MAGNIFIED image when object between F and C,at focus, between F and P. When object is placed at infinity then both mirrors produced image at focus of DIMINISHED size.

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ANSWER:

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ANSWER:

BATTAL

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ANSWER:

Acceleration and DISTANCE are COVERED in a RACING car

ANSWER:

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OPTION b)differs by 1

Explanation:

for 49

4.9x10^1   (since 4.9 is lesser than 5)

HENCE the magnitude is 1

for 51

5.1x10^1    (since 5.9 is greater than 5)

hence the magnitude is 2

so option b is correct

Explanation:

The radius of the field is 230m so first we will calculate it's circumference which is 2πr

=2×π×230

2×22/7×230

10120/7meters = 1445.7(APPROX)

Now he COVERED this DISTANCE is 11 seconds

and we KNOW speed is distance /time

so his speed = 1445.7/11

131.4 meter /SECOND

Answer:

Explanation:Firstly we have to draw a GRAPH of velocity TIME graph then we have to write some of these now I am give you answer this? I give you a image of this question.

Thanks!!

• The direction of force EXPERIENCED by a current carrying CONDUCTOR placed in a MAGNETIC field depends on the direction of the current in the conductor and the direction of the APPLIED magnetic field.

• This is given by Fleming's left hand RULE.

Explanation:

DENSITY= MASS/ VOLUME

DENSITY = 7KG/9L

DENSITY= 0.777 kg/l³

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Numerical VALUE 8.854 187 8128 X 10-12 F m-1

Standard uncertainty 0.000 000 0013 x 10-12 F m-1

Relative standard uncertainty 1.5 x 10-10