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Uniform velocity is COVERING EQUAL displacements in equal AMOUNTS of TIME

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The QUESTION is not vissible PROPERLY

  force=change in momentum/time

=>10=x/10

=>×=100Ns [or] 100kgm/s

Invese variation

Speed. Time

48. 7

48-20=28. x

Direct multiplication

48×7=28x

48=4x

x=12

So he TAKES 12HRS to WALK the DISTANCE

Dear in Series FIRST bulb will GLOW more brightly bcz it will CONSUME electricity first to glow and TRANSFER rest energy so max. energy is CONSUMED by first bulb and it will glow brighter

Newton's Second Law

While Newton's first law looks at how force affects the motion of objects, the second law DIVES into how we define force itself. Newton's second law states that an object's acceleration (or a) is DIRECTLY proportional to the net force (or F) acting on it and inversely proportional to its mass (or m). Unlike Newton's first law, there is no shorthand name for this one, but it is better known by its mathematical FORMULA, which you can see:



However, it is far more COMMON to see it written in the form where it has an equal sign instead of a proportional sign, which you can see:



This formula tells us that a force acting upon an object is equal to that object's mass multiplied by the acceleration caused by the force. You'll find this formula consistently used throughout your studies of introductory physics.

One excellent example of Newton's second law at work in our lives is our weight. You might not usually think about it this way, but your weight is actually the gravitational force of the earth acting on you. Your weight is equal to your mass multiplied by the acceleration due to gravity, 9.81 m/s.

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SI unit of amplitude is metre (m)

as amplitude is the maximum displacement suffered by the particles of the MEDIUM from their MEAN POSITIONS during the wave propagation.

SI unit of displacement is metre.

so, SI unit of amplitude is metre.

SI unit of frequency is HERTZ (Hz).

1Hz means that an event repeats once per second. A previous name for this unit was cycles per second

SI unit of wavelength is metre (m)

wavelength is usually a length of wave (distance between two adjacent crests or troughs of a wave is known as wavelength) and units of length is usually measured in metres (m).

So, SI units of wavelength is metre(m)

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You MAY close your EYES and think what you WANT then you can GET the choice...
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This is very simple.

F=Weight=mass × gravity
F=1960N
Area=0.4 X 0.4 =0.16m^2
Pressure=Force/Area
Put the values of force and area in the above equation, u will GET UR pressure.

Hope u got that

A diver in a swimming pool bend his head before DIVING because because the head the head applies more MAGNITUDE of force because the area of the head then the whole body is SMALLER and it is EASY to dive in a pool with a lesser thrust area

question PURA do

bhai circumference hoga 2pie r 2*3.14*21  16.484

As the bubble rises, pressure on the bubble DECREASES, which leads to expansion of bubble and THEREBY INCREASE of force due to buoyancy. As such kinetic energy INCREASES. Another energy which is associated with the bubble is its Buoyancypotential energy which is directly proportional to the DEPTH of the bubble.

Answer:

TIME taken by the FAST train to cover the DISTANCE of 600 KM = 600/(x+10) hours. Now, according to the question. x = -5 is not possible, the SPEED cannot be in negative. Speed of the slow train is 40 km/hr and the speed of the fast train is 40 + 10 = 50 km/hr.

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v=f×wave LENGTH, 1000×(34/100)=340m/s

Wave length =34/100m

t=d/f=1000/340=2.94

3s APPROX

Because of its ATMOSPHERIC CONDITIONS PRESENT over there
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Angular velocity does not depend on length
it only depends on ANGLE swept by it
so angular velocity of every CLOCKS MINUTE HAND will be same which is as shown


2π = 360°

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m=1500kg U= 60km/h =60* 5/18 = 50/3m/s V =0m/s w = change in its KE. INITIAL KE =1/2 mu2 final KE=1/2mv² w = 1/2mv2  - 1/2 mu2   =1/2m(v2-u2) = 1/2 * 15000{0- (50/3)2} =  -208333.33J


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Given the density of the body = ρ and volume = V

Therefore the mass of the body = Vρ

For a FLOATING body in TWO liquids,

Weight of the body
= Buoyant force of liquid 1 +Buoyant force of. liquid 2

Consider a thin film of uniform thickness (t) and R.I (μ)

On Reflected side,

The ray of light BF and DE will interfere. The path difference between BF and DE is,

Δ=μ(BC+CD)−BGΔ=μ(BC+CD)−BG

BC=CD=tcosr..........(1)BC=CD=tcosr..........(1)

Now,

BD = (2t) tan r .......(2)

BG = BD sin i

BG = (2t) tan r sin i

BG=2tμsinr(sinrcosr)BG=2tμsinr(sinrcosr) [μ=sinisinr][μ=sinisinr]

BG=2μtsin2rcosr......(3)BG=2μtsin2rcosr......(3)

Substituting (i) and (iii) in Δ :

Δ=μ(tcosr+tcosr)−2μtsin2rcosrΔ=μ(tcosr+tcosr)−2μtsin2rcosr

=2μtcosr(1−sin2r)=2μtcosr(1−sin2r)

Δ=2μtcosrΔ=2μtcosr

This is a geometric path difference. However, there is a phase change of π, as ray BF is reflected from a DENSER medium. Hence we need to add ±λ2±λ2 to path difference

Δ=2μtcosr±λ2Δ=2μtcosr±λ2

For DESTRUCTIVE INTERFERENCE:

Δ=nλΔ=nλ

2μtcosr±λ2=nλ2μtcosr±λ2=nλ

2μtcosr=(2n±1)λ2.....(n=0,1,2,...)2μtcosr=(2n±1)λ2.....(n=0,1,2,...)

This is the required expression for constructive Interference or Maxima.

For Destructive interference:

Δ=(2n±1)λ2Δ=(2n±1)λ2

2μtcosr±λ2=nλ2μtcosr±λ2=nλ

2μtcosr=nλ2μtcosr=nλ

This is the required expression for destructive interference.

Then COMPLETE the QUESTION

You MEANT mixture and compound
Mixture is a group of TWO or more than two COMPOUNDS Other hand compound is a group of two or more than two elements

In transport economics, the VALUE of time is the opportunity cost of the time that a TRAVELER spends on his/her journey. In essence, this makes it the AMOUNT that a traveler would be willing to pay in order to SAVE time, or the amount they would accept as compensation for lost time.

When you PUT the water in the THICK glass. thermal conductivity of Glass is very LESS so the expansion of inner wall is more and Outer wall is less. That's why it break

ONE more OPTION REQUIRED

Thank for you are INTERESTED please send the check engine is an infection the first and LAST YEAR in my LIFE with your.

The BETTER way to connect LIGHTS and other DOMESTIC appliances is in parallel circuit because if one appliance is DAMAGED then there is no PROBLEM to other appliances

Hello mate

BLACK-body radiation is the thermal electromagnetic radiation within or surrounding a body in THERMODYNAMIC equilibrium with its ENVIRONMENT, or EMITTED by a black body (an opaque and non-reflective body).

1. A source has CHEMICAL energy which transfers electrons to the CONDUCTOR.
2. The conductor CARRIES the electrons to the bulb when connected.
3. Thus, the conductor transfers energy from source to bulb.

Let a body of mass ‘m’ is moving with a velocity ‘V’.A force ‘F’ is applied on it to stop its motion for which the retardation ‘h’ is produce in the body and the body COVERS a distance ‘s’ before coming rest.

Work done by the force to stop the motion of the body is the measure of kinetic energy .

Here

Initial velocity = v

Final velocity = 0(zero)

From Newton’s 2nd law

F = ma

or, a = F/m

From 3rd equation of motion

0=v^2 - 2as

or, 2as = v^2

or, 2 × F/m × s = v^2

or, s = (mv^2) /2F

Therefore , workdone by the force,

W = Fs

or, W = F ( mv^2 )/2F

or, W = 1/2 mv^2

Hence,

Kinetic energy = 1/2mv^2

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In INDIA 128 UD thr AMOUNT of electical,energy consumed by PER or each person