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Yes it does

By using elementary geomety, it can be proved that

d1d2=cosicosr

where d1 and d2 are the width of the light beam in the incident and refracted medium respectively, and

i and r are the incident and refracted angle respectively  

Lateral Shift would be ∣d1−d2∣

or

Suppose your slab has a certain thickness, say d. From Snell's LAW about REFRACTION, calling θi the angle between the incoming ray and the normal to the surface, ni the refractive index of the medium outside the slab, NM the refractive index INSIDE the slab and θm the angle between the ray in the slab and the normal to the surface:

nmsinθm=nisinθi

you can derive the angle θm:

sinθm=ninmsinθi

Then, from basic trigonometry, you know that:

sin2θm+cos2θm=1

⇒cosθm=1−sin2θθm−−−−−−−−−−√

and, with dd as defined and l length of the PATH of the ray inside the slab, you can write:

d=l⋅cosθm

⇒l=dcosθm

Calling x the lateral displacement you are asking for:

x=l⋅sinθm

By substituting in this equation, you can get your result as an expression of the angle of incidence, the refractive indexes and the thickness of the slab.

Can U TELL me about SPECIFIC GRAVITY

Hi
It is evident that it is used the EQUATION: F = ma. for the FORCE and not:F = dp/dt. By definition p = mv anddp/dt = m(dv/dt) + v(dm/dt).

hope it HELPS u
mark as brain list answer

U can check that by solving all previous ,present and some QUESTIONS that u have not done.
and solving other QUES. from different BOOKS.

Cofficient of FRICTION is the value which shows relation between frictional force and normal force. μ is completely experimental

F = μN

A coefficient of friction that is more than ONE just MEANS that friction is stronger than the normal force.

An object such as , for example SILICONE,rubber can have a coefficient of friction much GREATER than one.

(rubber-1.16)

Let the distance be D km

we KNOW that, Distance = Speed x Time

∴ D = 50 km x 42/60 HR = 35 km

Now, Time = 30 minutes = 30/60 hr = 1/2 hr

∴ NEW speed of the bus = Distance / Time = 35 km / (1/2) hr = 70 km/hr

The water at the bottom of the watch glass comes from condensed water that is removed from the air around the watch glass. The watch glass has an extremely smooth surface that is able to attract water molecules in the form of humidity or moisture on to its surface. Moreover, the reason that they are seen as DROPLETS and not liquid is because f the cohesivity of water COMPARED to the surface of the watch glass.

As a RESULT, we notice water droplets collected at the bottom of a watch glass when SIMPLY left alone.  

Zero-point energy (ZPE) is the difference between the lowest possible energy ... Schrödinger equation .... In QUANTUM field theory this COMBINATION of FIELDS is called the vacuum STATE, ...

The thermal CONDUCTIVITY of a material is a measure of the ability of that material to conduct HEAT through it. Thermal diffusivity of a material, on the other HAND, is the thermal inertia of that material. This is the MAIN DIFFERENCE between thermal conductivity and thermal diffusivity.

Hii dear,

# ANSWER- Cellulose xanthate

# Explanation-
When cellulose(wood PULP) is DISSOLVED in sodium hydroxide and carbon disulfide is added, the result is viscous syrup called cellulose xanthate.
- Acid bath changes cellulose xanthase back to cellulose.

# Use :-
The reaction is used for production of textile fibres-
1)the syrup is forced into acid solution through small holes to produce rayon fibres
2)the syrup is forced into acid solution through slits to produce cellophane sheets.

Hope your concept is now CLEAR.

All the above OPTIONS

A) is the CORRECT OPTION

1:32 is the ANSWER if we CONSIDER it ACCORDING to AVAGARDO LAW

Aida hell do HACK Bev GOTTEN R EU ute we u7r4 check Bev hide KEFIR wood

Because the BALL in the TRAIN it has also the same SPEED of the train is MOVING. when it is drop down from the DOOR it strarts to come in rest

i think you should go for UNDERSTANDING the CONCEPT, then learn.

if you look at examples related to the laws of motion you will get an idea on what newtons laws are

you can EVEN TRY WATCHING study video on the laws of motion

Pulse-width modulation (PWM) is a modulation process or technique USED in most communication systems for encoding the AMPLITUDE of a signal right into a pulse width or duration of another signal, usually a carrier signal, for transmission. Although PWM is also used in communications, its main PURPOSE is actually to control the power that is supplied to VARIOUS types of electrical devices, most especially to inertial LOADS such as AC/DC motors.

1.mass = 20kg

weight=force=20*10=200N

s=3m

w.d=fs

=200*3

=600J

potential energy=600J

2.u=18kmph=5m/s

v=9kmph=2.5m/s

w.d=change in K.E=1/2m(V2 -U2)

=1/2*70*(2.52-52)

=35*7.5*-2.5

=-656.25J

change in k.e=656.25J(as w.d is a scalar quantity)

initial k.E=1/2*70*5*5

=875J

final K.E=initial K.E-change in K.E

=875-656.25

=218.75J

no k.E o not REDUCE by half.It REDUCED by one fourth.

6.25*1000000000000000000

What is ASKED to FIND???????????????

The process by which the ciliary MUSCLES change the focal length of an eye lens to focus distant or near objects clearly on the retina is called the accommodation of the eye. POWER of accommodation is given by P = 1/f (in m) = 1/.25 (SINCE f = 25cm for normal eye) = P =100/25 = 4 D

the center of mass of a distribution of mass in space is the unique point where the weighted relative POSITION of the distributed mass sums to zero, or the point where if a FORCE is applied it moves in the direction of the force without rotating. on the other hand an isolated system consists EITHER of the FOLLOWING: a physical system so far removed from other systems that it does not interact with them. a thermodynamic system enclosed by rigid immovable walls through which neither matter nor energy can pass.In an isolated system, there is neither energy exchange nor particle exchange. Therefore, the work done on/by the system is zero. In contrast, in a closed system, there is energy exchange but not particle exchange. ... We also have work done on the system equals "NEGATIVE" work done on the surroundings

1 KM in 10min or 1/6hr.

So, speed here, is 6km/hr.

6km/hr = Vs-Vr ([email PROTECTED])

Vs- speed in still water.

Vr- speed in moving water.

So, SIMILARLY

4MIN or 1/15hr,

15km/hr = Vs+Vr ([email protected])

So. From ([email protected] and [email protected])

Vs=10.5km/hr.

Vr=4.5km/hr.

It will be equal to the NET resistance of the BULB multiplied by the square of the CURRENT flowing through it

Magnetic field lines are imagery LINE used to represent magnetic field
Characteristics are as follows:
1.they do not intersect each other
2.the relative strength of mahnetic field lines is given by the degree of closeness
3.their direction is indicated by ARROWS in the line at anypoint
4.the direction of field line inside the MAGNET is from south to NORTH pole and vice-versa outside the magnet

Solution:

GIVEN that Resistance(R) = 20 Ω, Electric current (I)= 5 A and time(t)= 30 s

Now we KNOW that H= I2Rt

                                = 5×5×20×30

                                = 15000J=1.5×104J

∴ The HEAT developed in 30S is 1.5×104J

This can FLOAT in the WATER.

I THINK CORRECT is 6mper s

The third LAW of thermodynamics states that the ENTROPY of a system at absolute ZERO is a WELL defined CONSTANT. This is because a system at zero temperature exists in its ground state so that its entropy is determined only by the degeneracy of the ground state.

What is your QUESTION?

What is your QUESTION?

The unit of INTENSITY of light is one of the basic 7 fundamental quantity and its called candella. It is the power emitted by a light source in a particular DIRECTION weighted by the luminosity function. A COMMON candle EMITS light with a luminous intensity of roughly one candela.

Angle of contact between mercury and soda lime glass, θ = 140°
Radius of the NARROW TUBE, r = 1 mm = 1 × 10–3 m
Surface tension of mercury at the given temperature, s = 0.465 N m–1
Density of mercury, ρ =13.6 × 103 kg/m3
Dip in the height of mercury = h
Acceleration due to gravity, g = 9.8 m/s2
Surface tension is related with the angle of contact and the dip in the height as:
s = hρgr / 2 Cosθ
∴ h = 2S Cosθ / ρgr
= 2 × 0.465 × Cos1400 / (1 × 10-3 × 13.6 × 103 × 9.8)
= -0.00534 m
= -5.34 m
Here, the negative sign shows the decreasing level of mercury. HENCE, the mercury level dips by 5.34 mm.

ĀNSWĒR ⏬⏬⏬


✨ It used to GENERATE a magnetic FIELD in an electro-magnetic MACHINE such as a motor or generator.


Thanks ✌✌

✌✔✌✔✌✔✌✔✌✔✌

Answer:

ANSWER

Given : m

1

=m m

2

=2m u

2

=0 u

1

=u

Let the velocity of mass m after the collision be v

1

.

Using v

1

=

m

1

+m

2

(m

1

−em

2

)u

1

+(1+e)m

2

u

2

v

1

=

m+2m

(m−1×2m)u+(1+1)2m(0)

=

3

u

Thus final kinetic energy of m

1

, E

1

′

=

2

1

MV

1

2

=

2

1

m×

9

u

2

=

18

1

mu

2

Initial kinetic energy of m

1

, E

1

=

2

1

mu

2

Fraction loss in K.E of m

1

,

E

1

ΔK.E

=

2

1

mu

2

2

1

mu

2

−

18

1

mu

2

=

9

8

SOLUTION

Yes your RIGHT but please TELL me your question DEAR FRIEND........

It DEPENDS on the slope of V-I graph .
as resistivity depends on material the resistance actually MATTERS in case of resistivity.

from graph it's clear that the current in the X WIRE is more than in the current in Y wire (means resistance of X is LESS than Y)
(slope of X is more than slope of Y.(Y is having more resistance than X))

so the resistivity of X is less than Y.
(Y has GREATER resistivity)

It has only MAGNITUDE and no direction. It depends on magnitude of two vectors which are multiplying and COSINE of angle between them. A . B = AB (cosine of angle between them). Best example is 'work done by a force' = force . displacement = Fd(cosine of angle between force and displacement)

HOPE you understand

KINETIC ENERGY becomes one FOURTH in this case.

The heat transferred to CAUSE a temperature change depends on the magnitude of the temperature change,the mass of the system,and the substance and PHASE involved .
(a) The amount of heat transferred is directly proportional to the temperature change of a mass , you NEED to ADD TWICE the heat
(b) The amount of heat transferred is also directly proportional to the mass . The cause an equivalent temperature change in a doubled mass , you need to add twice the heat