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Explanation: A BATTERY of emf 4 volts and internal resistance 1Ω is connected in parallel with another battery of emf 1 volt Combination is used to send current through an external resistance 2Ω. Calculate current through external resistance and potential difference across external resistance.

equation: V

1

​

=4v

R

1

​

=1Ω

V

2

​

=1v

R

2

​

=0Ω

'Total current from the combination=current FLOWING 2Ω=I

∴I=

R

1

​

−R

2

​

v

1

​

−v

2

​

​

=

1+0

4−1

​

A

=3A

Potential difference across 2Ω=(3×2)v

=6v

i HOPE this works

ANSWER:

The rotation and ELECTRICITY also produce HEAT ENERGY as a byproduct also the rotation of blades produce noise and the small light that shows the grinder is connected to main source show that the electrical energy is CONVERTED into mechanical, heat, noise and light energy.

Answer:INITIAL vertical speed is u=5m/s×sin53  

0

=4m/s

so if the FINAL vertical  velocity being v at a height H then v  

2

=u  

2

−2gh will give us v=  

16−20×0.45

​  

=  

7

​  

m/s

the horizontal velocity REMAIN CONSTANT and given as V  

x

​  

=5m/sCos53  

0

=3m/s

so the speed at the said instant will be V=  

V  

x

2

​  

+v  

2

​  

=  

9+7

​  

=4m/s

Explanation:

Answer:

Rayleigh SCATTERING

This article is about the optical phenomenon. For the magnetic phenomenon, see Rayleigh law. For the stochastic distribution, see Rayleigh distribution. For the wireless communication effect, see Rayleigh fading.

Rayleigh scattering causes the blue color of the daytime sky and the reddening of the Sun at sunset.

Rayleigh scattering (/ˈreɪli/ RAY-lee), named after the nineteenth-century British physicist Lord Rayleigh (John William Strutt),[1] is the predominantly elastic scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of the radiation. For light frequencies well below the resonance frequency of the scattering particle (normal dispersion regime), the amount of scattering is inversely proportional to the fourth power of the wavelength.

Rayleigh scattering results from the electric polarizability of the particles. The oscillating electric field of a light wave acts on the charges within a particle, causing them to move at the same frequency. The particle, therefore, becomes a small radiating dipole whose radiation we see as scattered light. The particles may be individual atoms or molecules; it can occur when light travels through transparent solids and liquids, but is most prominently SEEN in gases.

Rayleigh scattering of sunlight in Earth's atmosphere causes diffuse sky radiation, which is the reason for the blue color of the daytime and twilight sky, as well as the yellowish to reddish hue of the LOW Sun. Sunlight is also subject to Raman scattering, which changes the rotational state of the molecules and gives RISE to polarization effects.[2]

Scattering by particles similar to, or larger than, the wavelength of light is typically treated by the Mie theory, the discrete dipole approximation and other computational techniques. Rayleigh scattering applies to particles that are small with respect to wavelengths of light, and that are optically "soft" (i.e., with a refractive index close to 1). Anomalous diffraction theory applies to optically soft but larger particles.

History

In 1869, while attempting to determine whether any contaminants remained in the purified air he used for infrared experiments, John Tyndall discovered that bright light scattering off nanoscopic particulates was faintly blue-tinted.[3][4] He conjectured that a similar scattering of sunlight gave the sky its blue hue, but he could not explain the preference for blue light, nor could atmospheric dust explain the intensity of the sky's color.

In 1871, Lord Rayleigh published TWO papers on the color and polarization of skylight to quantify Tyndall's effect in water droplets in terms of the tiny particulates' volumes and refractive indices.[5][6][7] In 1881 with the benefit of James Clerk Maxwell's 1865 proof of the electromagnetic nature of light, he showed that his equations followed from electromagnetism.[8] In 1899, he showed that they applied to individual molecules, with terms containing particulate volumes and refractive indices replaced with terms for molecular polarizability.[9]

Answer:

The ENERGY transformation in mixie and GRINDER is

Electrical to heat energy

Electrical to MECHANICAL energy

Electrical to SOUND energy

Electrical to light energy

Answer:

The newton is the SI unit for force; it is EQUAL to the amount of net force required to accelerate a mass of one kilogram at a rate of one meter per second squared. Newton's second LAW of MOTION states: F = ma, multiplying m (kg) by a (m/s2), The newton is therefore: N=kg ms2.

EXPLANATION:

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ANSWER:

A man using a parachute FALLS through air slowly because a parachute experiences alot of air resistance due to its large surface and SHAPE but a stone has no air resistance HENCE it falls very fast than a parachute.

(A) 8x + 5) (2x + 3) is your RESPONSIBILITY is to INFORM me about it and PLEASE let me in...,...,..

ANSWER:

what is this DEAR POST it PROPERLY

ANSWER:

it will COVER a DISTANCE of 0.22 m

CUTEnBEUTY

In complex analysis, Euler's formula provides a fundamental bridge between the exponential function and the TRIGONOMETRIC functions. For complex NUMBERS xx, Euler's formula SAYS that

E^{ix} = \cos{X} + i \sin{x}.

e

ix

=cosx+isinx.

In addition to its role as a fundamental mathematical result, Euler's formula has numerous applications in physics and engineering.

ANSWER: The colour of sky will be black if the earth had no atmosphere. This is because due to presence of atmosphere the sun RAY get scattered and we see blue sky during the day. In the ABSENCE of any atmosphere, there will be no scattering of sunlight and the sky will APPEAR dark.

Explanation:

different Application of Atmospheric pressure in our day by day life are:

1)Straw : When a man sucks up the fluid from straw the pressure inside is moderately low and accordingly atmospheric pressure outside POWERS up the fluid into straw.  

2)Vacuum cleaner : When a vacuum cleaner is exchanged on, the pressure inside tumble off because of air inside. Consequently atmospheric pressure being more prominent powers the residue PARTICLES into the cleaners DUCT.  

3)Lift pump/handpump is likewise founded on the Application of atmospheric pressure.  

4)Siphon : It is only a RUBBER cylinder utilised for exchange fluid. For instance once in a while people utilise rubber cylinder to exchange oil starting with one compartment then onto the next. This sort of game plan is KNOWN as siphon.

Answer:

Let the height of the highest point that the object reached be S meters

The object has climbed the height of (S-5) m in 10s/2 = 5 seconds and it DESCENDED (S-5) m in the same TIME = 5sec

we USE s = ut + 1/2 a t²

S - 5 = 0 * 5 + 1/2 * 9.8 * 5²

S = 127.5 meters

Time duration for the object to travel VERTICALLY 127.5 meters

127.5 = 0 t + 1/2 * 9.8 * t²

t² = 26.02 t = 5.1 sec

Total time of flight = 2 * 5.1 = 10.2 seconds

Explanation:

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Answer:An atom is about 10-8 CENTIMETERS in size (meaning that 100 million of them would fit side-by-side within one centimeter). The tightly packed nucleus is 100,000 TIMES SMALLER than the electron cloud.

Explanation:

Answer:

15m/s is the answer.

Explanation:

Initial Velocity = 0m/s (since the body was at rest)

Final Velocity = 30m/s

Time = T

Averge velocity = (Initial + Final)/2

= (0 + 30)/2

= 30/2

= 15m/s

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Answer:

100÷4=25 has f=radius ÷2

Answer:

ET the LENGTH of the first nichrome wire=l then the length of the second nichrome wire =4l,...................................let the CROSS section area of the first wire =A then,the cross section area of the second wire =3A.....................let resistance of the first wire =R1 and resistance of second wire =R2....then,R1/R2=(p×l/A)/(p×4l/3A)=3/4............now,it is given that resistance of first wire is 5 ohm so,R1/R2=3/4=>5/R2=3/4...=>R2=20/3=6.67 ohm(ans

Explanation:

Answer:

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Answer:

The incident RAY, the reflected ray and the NORMAL to the REFLECTION SURFACE at the point of the incidence lie in the same plane.

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Answer:

υ = 2 π v r. Equation 32.7 can therefore be WRITTEN as. (32.13) NOTE that the frequency of revolution and thus the period) is independent of the radius of the orbit and the speed of the charge. This frequency is called the cyclotron frequency because the operation of a DEVICE called a cyclotron is based on this ...

Explanation:

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ANSWER:

How do you FIND VELOCITY after t SECONDS?

Solution

When t=1, the velocity of the PARTICLE is 4+2=6 m/s.

When t=2, the velocity of the particle is 4+2×2=8 m/s.

After t seconds, the velocity of the particle is 4+2t m/s.

Answer:

2.5 CM is answer of this question.

EXPLANATION:

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ANSWER:

Radius of curvature (R) = 30 cm

f = R/2 = 30/2 = 15 cm

u = -20 cm,

h= 5 cm.

1/v +1/u = 1/f

1/v = 1/15+ 1/20 = 7/60

v = 60/7 = 8.6 cm.

IMAGE is VIRTUAL and erect and formed behind the mirror.

hi/h0= v/u

hi/5= 8.6/20

hi = 2.2 cm.

Size of image is 2.2 cm.

Explanation:

: FOUR POINT charges each of same magnitude 1C are placed at the corner of a SQUARE square of side 1 m. find the net force on the charge of 1c Placed at the center of the square.

Answer:

As the NEEDLE is MOVED further from the mirror, image moves away from the mirror till it is at FOCUS F of the mirror the size of the image goes on DECREASING. ⇒ h₂ = 2.5 cm.

ANSWER:

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Explanation:

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The total force ACTING from the left is 15+10
=25N
The total force acting from the RIGHT is 25N
Therefore, the NET force is 25-25
=0
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ANSWER:

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Answer:

A low pressure area usually begins to form as air from two REGIONS collides and is forced UPWARD. The RISING air creates a giant vacuum effect. ... As the air in the STORM rises

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Answer:

25M/S

30Explanation:

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ANSWER:

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Explanation:

are placed at the corner of a square square of SIDE 1 m. find the net force on the CHARGE of 1c Placed at the CENTER of the square.

ANSWER:

Left-hand rule

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ANSWER:

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ANSWER:

(i) FALSE

(II) False

(iii)TRUE

(iv)True

(v)False

Answer:

ok...I am there to help don't worry...U HV asked this QUESTION many times...

EXPLANATION:

HV a nyc dy ❤️

Answer:

pressure is DIRECTLY proportional to the force and INVERSELY proportional to the AREA of contact.

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ANSWER:

NONE of this

EXPLANATION:

it MIGHT not be the CORRECT answer

ANSWER:

C is the right answer

Explanation:

because rutherford bombarded with ALPHA RAYS and see that it comes down

ANSWER:

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is it TOMORROW

ANSWER:-

Q. AREA under velocity - time graph (v - t graph) graph is equal to:-

a) SPEED of the body.

b) Distance traveled by the body.

c) Magnitude of DISPLACEMENT of the body.

d) None of these.

Soln. : c) Magnitude of displacement of body.

Justification:-

We know,

v = s/t

where,

• v = Velocity,
• s = Displacement &
• t = Time.

We can also write,

s = v × t (Product of velocity and time, - Area of the under the graph)

Explanation:

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Explanation:

HOME appliances like fan BULB etc are AC appliances

Answer:

CHARGE q is placed at the corner of a cube. What is the flux through one face of a cube?

q/(24*epsilon)

Imagine there were 8 CUBES and the charge was placed at the common corner.

By Gauss’ law flux would be q/epsilon

Since all 8 cubes are identical flux through each cube is q/(8*epsilon)

Now in the cube the 3 FACES which share the corner at which cube is kept would have no flux through it (Field and area would be perpendicular so dot product is zero). In the remaining 3 faces, the flux is DISTRIBUTED evenly hence total flux = q/(24*epsilon)

Explanation:

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EXPLANATION:

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ANSWER:

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Explanation: