Explore topic-wise InterviewSolutions in Current Affairs.

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ong>Answer:

.

EXPLANATION:

A prism is a transparent optical element with flat, polished surfaces that refract light. Prisms can be made from any material that is transparent including glass, plastic and fluorite.

A prism can be used to break light up into its constituent SPECTRAL colors. Prisms can also be used to reflect light, or to SPLIT light into components with different polarizations

objective

To find refractive index of different liquids USING hollow prism.

Theory

Refraction:

The refractive index of the liquid is given by the FORMULA:

Refractive Index

ong>ANSWER:

INDICATORS are used to show on which direction you are going to turn , indicators work with electricity

Explanation:

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ong>Answer:

DROP a normal PQ on the side AB.

Draw the angle of incidence in accordance with the normal PQ and place 2 pins so that they APPEAR to be in the straight line.

Place the PRISM filled with given sample of liquid ,on the marked outline ABC. ...

Remove the prism and draw the line joining the points so obtained

Explanation:

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2.4 and 9

Explanation:

HOPE this will HELP you

ong>ANSWER:

VELOCITY at max height =20cos60

=10 m/s.

i.e.,

using MOMENTUM CONSERVATION

10×2m=m×v

⇒v=20 m/s.

Explanation:

Answer in attachment ⤴️

I HOPE you will UNDERSTAND this and it will help you ✨⚡!

An electric MOTOR is an electrical machine that CONVERTS electrical energy into MECHANICAL energy.

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ong>Answer:

THODA sa tough hai agar PEHLE thik SE nahi padha

PROTONS

Explanation:

Neutrons can be slowed down if the target are protons

ong>Explanation:

_________________________________________________________

⊙ Using p=ℏiddx and the assumption that particles have a WAVE-like nature, you can prove that p=hλ. Since in general, we can WRITE the wave function of a given state of a particle as: Ψ(X,t)=Ψ0ei(kx−ωt), which gives us: pΨ=ℏidΨdx=ℏkΨ, so p=ℏk=h/λ.

_________________________________________________________

because earth have 2 poles one is north another is South which are MAGNETIC poles which are made by sun and solastim

★TO FIND:-

An expression for work done, CHANGE in internal energy and heat supplied in an isobaric process on a gas

★SOLUTION:-

Isobaric process MEANS a thermidynamic process ASSOCIATED with CONSTANT external pressure

Let,

• Internal energy change = ∆U

• Number of moles = μ

• Work = W

• Heat change = ∆Q

In Constant Pressure, the heat change is :-

In all thermodynamics process, ∆U is given as :-

As according to first law of thermodynamics:-

It can also be represented by:-

ong>Answer:

The WORK done by the STRING will be zero because,thef orce (CENTRIPETAL) and the displacement are perpendicular to each other.

W=F.S.COS theta

W=F.S cos 90°

cos 90°= 0

therefore,W=0.

ong>ANSWER:

please mark this BRAINLIEST please again I follow and like you to OK SIR please SEE

r is 0 Nm.

Explanation:

we know that torque=F×r

where F×r MEANS Fr sin theta.

we have F=2i+5j+4k

and. r=3i+3j+3k

theta =0. ( becouse in the question they GAVE US theta is about the origin)

substitute the values in the formula

torque=(2i+5j+4k)(3i+3j+3k)0 Nm.

therefore torque becomes 0 Nm.

The units for torque are Nm.

Additional information: torque is ALSO known as moment of force.

Hope this will HELP you.

p>

In electronics and electrical engineering, a fuse is an electrical safety device that OPERATES to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too MUCH current flows through it, THEREBY stopping or interrupting the current. It is a sacrificial device; once a fuse has operated it is an open circuit, and must be replaced or rewired, depending on its TYPE.

• It is a METHOD of vegetative propagation.

• In this method stem of plant is cut and PLANTED in the soil and then this stem form a new plant.

• E.g → Rose plant , sugarcane , banana , cactus , ETC.

>

31680N

MASS m=12kg

and VELOCITY v=13.2m/s

time t=0.005sec

Force= mass×acceleration

=> m×v/t

=12×13.2/0.005

=158.4/0.005

=31680N

here t is in SECONDS and the coefficients have the proper units for r to be in METRES. (a) Find v(t) and a(t) of the PARTICLE. (b) Find the MAGNITUDE and direction of v(t) at t = 1.0s.

Sorry na ban raha xD

ong>ANSWER:

Both Assertion and Reason are CORRECT, but (R) is not the correct explaination of (A)

please mark as brainliest if it helped you

the answer is..

1 KILOMETRE per hour =

27.778 CENTIMETRES / SECOND

ong>Answer:

PINTREST VAR YE

Explanation:

Summary

The expansion of the universe is in many ways similar to the collapse of a STAR, except that the sense of time is reversed. We shall show in this chapter that the conditions of theorems 2 and 3 SEEM to be satisfied, indicating that there was a singularity at the beginning of the present expansion phase of the universe, and we discuss the implications of space–time singularities.

In §10.1 we show that past-directed closed trapped surfaces exist if the microwave background RADIATION in the universe has been partially thermalized by scattering, or alternatively if the COPERNICAN assumption holds, i.e. we do not occupy a special position in the universe. In §10.2 we discuss the possible nature of the singularity and the breakdown of physical theory which occurs there.

The expansion of the universe

In §9.1 we showed that many stars would eventually collapse and produce closed trapped surfaces. If one goes to a larger scale, one can view the expansion of the universe as the time reverse of a collapse. Thus one might expect that the conditions of theorem 2 would be satisfied in the reverse direction of time on a cosmological scale, providing that the universe is in some sense sufficiently symmetrical, and contains a sufficient amount of matter to give rise to closed trapped surfaces. We shall give two arguments to show that this indeed seems to be the case. Both arguments are based on the observations of the microwave background, but the ASSUMPTIONS made are rather different.

ong>Given info : A piece of wire 50 cm long is stretched by a load of 2.5 kg and has a mass of 1.44 gm.

To find : The frequency of the SECOND harmonic is..

solution : length of wire, l = 50cm = 0.5 m

the wire is stretched by load, T = 2.5 kgf = 25 N [ g = 10 m/s² ]

mass of the wire, m = 1.44 gm

linear mass density, μ = mass of wire/length of wire = 1.44 × 10¯³/0.5 = 2.88 × 10¯³ kg/m

using formula,

f = 2n₁

= 2 × 1/2l √(T/μ)

= 1/l √(T/μ)

now, f = 1/0.5 √(25/2.88 × 10¯³)

= √(25000/2.88)

= 186.34 Hz

THEREFORE the frequency of second harmonic is 186.34 Hz.

ong>Answer:

1. INCREASES

2. become more parallel

this answer byeeeeeeeeeeeeeeeer

A system ROTATING with an angular momentum in presence of a torque suffers a change in the angular momentum and the RATE of change of angular momentum is directly proportional to the torque acting on it.

If I be the moment of inertia of the system and ω be the angular velocity then angular momentum L= Iω

Rate of change of angular momentum provided the shape of system does not change is :

τ= dt÷d = (Iω)=I×dω÷dt = Iα

α is the angular ACCELERATION and τ is the torque.Dimension of Torque is [ML²T-2²] and its unit is Newton- metre (N⋅m).

Explanation:

I hope this will be correct and it will help you ✨⚡

ssure is a scalar QUANTITY, not a vector quantity. It has a MAGNITUDE but no DIRECTION associated with it. Pressure acts in all directions at a POINT inside a gas. At the SURFACE of a gas, the pressure force acts perpendicular to the surface.

this ANSWER HELP you

ong>Answer:  The MAGNETIC field will exert a FORCE on the particle and cause it to deflect as long as the ANGLE of its direction of motion and the direction of the magnetic field is not 180 DEGREES nor 0 degrees

Explanation:

AIR is rarer

Explanation:

WATER is denser.

hope I'm right.

ong>Answer:

The compass needle is a small magnet. That's why when a compass needle is brought near a bar magnet, its MAGNETIC FIELD lines INTERACT with that of the bar magnet. Hence, a compass needle gets DEFLECTED near the magnet bar.

Kaunsi CLASS ka YEH question hai

is TRUE

2 is true

3is FALSE

4is false 5 is true

Force=Impulse/time

Explanation:

F=mv/t

=(12×13.2)/0.005

=158.4/0.005

=31680N.

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Explanation:

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culam as unit of CHARGE of electric CURRENT as formula 10 square 6-19

ong>Answer:

HELLOWEEN winstreak is heare in 8 BALL POOL game by miniclip

ong>Answer:

The RELATION a=b=c and α=β=γ HOLDS for cubic and rhombohedral systems.

Cubic

a=b=c

α=β=γ=90

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Rhombohedral

a=b=c

α=β=γ

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=90

o

hope this will HELP you

B

EXPLANATION:

this is your answer man

12.0 kg HAMMER hits a nail at a velocity of 13.2 m/sec in 0.005 sec. What is the average FORCE exerted on the nail? (Show SOLUTION) (Lesson: Impulse MOMENTUM

12.0 kg hammer hits a nail at a velocity of 13.2 m/sec in 0.005 sec. What is the average force exerted on the nail? (Show solution) (Lesson: Impulse momentum

ong>ANSWER:

BRAINLIEST PLZ

Explanation:

The Public Health Agency report that regular PARTICIPATION in sport and being active can also promote good MENTAL health. This includes improving your mood, ENHANCING your sense of well-being, reducing anxiety, combating negative emotions and protecting against DEPRESSION.

How are you doing with this QUESTION

ong>Answer:

The RELATION between resistance R of FILAMENT of a bulb its power P and a constant voltage V APPLIED across it. R = V2/P.

ong>Answer:

Negative work is performed if the displacement is OPPOSITE to the direction of the Force applied. EXAMPLE: Work was done the gravity on a rocket GOING PERPENDICULAR upwards.

ake a list of at least five IDEAS and questions mentioned in this LESSON CHOOSE 3 from the llist anddiscuss why you think they are IMPORTANT event event today

make a list of at least five ideas and questions mentioned in this lesson choose 3 from the llist anddiscuss why you think they are important event event today