Explore topic-wise InterviewSolutions in Current Affairs.

ANSWER:

HOPEFULLY this will WORK

ANSWER:

DISPERSION of light

Explanation:

<P>heyyy...........

p REPRESENTS momentum

v represents velocity

e represents KINETIC energy

hope it helps u......

Answer:

the dependence of LIQUID pressure on DEPTH is not a PROBLEM for giraffe

Explanation:

this is because giraffe lives on land it is not affected by WATER pressure

Answer:

We are given:

Number of turns of solenoid, N = 100

Length of the solenoid, L = 20 cm = 0.2 m

diameter of the solenoid, d = 4 cm = 0.04 m

Current through the solenoid, I = 2 A

Cross sectional area of the solenoid, A =πd24 =π×(0.04)24 =1.26×10−3 m2A =πd24 =π×(0.04)24 =1.26×10−3 m2

(a) Finding the magnetic field (B) in the core of the solenoid

B =μo×NL×IB =μo×NL×I

B =4π×10−7×1000.2×2B =4π×10−7×1000.2×2

B =1.26×10−3 TB =1.26×10−3 T

(b) Finding the inductance (L) of the solenoid

L =μo×N2L×AL =μo×N2L×A

L =4π×10−7×10020.2×1.26×10−3L =4π×10−7×10020.2×1.26×10−3

L =7.92×10−5 HL =7.92×10−5 H

(C) Magnetic ENERGY stored (E) in the solenoid

E =12×L×I2E =12×L×I2

E =12×7.92×10−5×22E =12×7.92×10−5×22

E =1.58×10−4 JE =1.58×10−4 J

Explanation:

AB cosΦ = 48(3)^1/2---------(1)

AB sinΦ = 144 -----------(2)

(1) divided by (2),

cot Φ = 1/{(3)^1/2}

so, Φ = 60°

ANSWER:

RADIOACTIVITY is the tendency of an atom to emit ionizing radiation in the form of ionizing particles, sich as alpha or beta particles, or even rays like gamma rays. HIGHER radioactive substances are usually unstable isotopes, such as isotopes with a lot of neutrons in them.

I'm pretty SURE everyone has heard of the ELEMENT uranium. It is weakly radioactive, having a life span of around

159

,

000

−

4

,

500

,

000

,

000

years.

Hope this helps!

EXPLANATION:

i HOPE this is the ANSWER

if U LIKE it then folow

Answer:

they do not drift towards each other because the gravity EXERTED by EARTH is GREATER than the gravity exerted by earth because the mass of earth is greater than the RELATIVE massesof TIMA and rina

Explanation:

DIFFERENT resistances are JOINED with each other such that there is only one path for the flow of ELECTRIC current then the combination of such resistance is CALLED 'Series combination'

ANSWER:

Which QUESTION have to be SOLVED

There is no question

ANSWER:

we can PRODUCE it by HYDRO electricity or by solar panels

ANSWER:

at 45 DEGREES the the RESULTANT will LIE

Answer:

The pressure exerted by a liquid is SMALL just under the surface of the liquid. But as we go we deeper in a liquid the pressure of liquid INCREASES.As the depth of liquid increases the weight of liquid COLUMN pushing down from above increases and hence the pressure also increases.

ANSWER:

V=f *lamda

3*10^8/2 = lamda

so, DISTANCE TRAVELLED by the wave=1.5*10^8.

ANSWER:

ELECTRICAL ENERGY is CONVERTED into HEAT energy

ANSWER:

hjoahxidbxofc FANCY DOCK don't

Explanation:

Magnetic effect. A current flowing in a wire produces a magnetic field AROUND the wire. In a COIL, the field from ADJACENT turns is in the same direction so it adds up. This is why a coil of wire with say 500 turns makes a much stronger magnet than ONE with 5 turns.

EXPLANATION:

this MAY be the right ANSWER and might it will HELP U

Explanation:

If ENERGY (E), velocity (v) and TIME (T) are chosen as the fundamental quantities, the DIMENSIONAL formula of surface TENSION will be .

you push a HEAVY table (PLACED on a regular floor) with some force and it doesn't MOVE. You call your friend to help you. Now you both push the table (in the same direction) and it starts MOVING.

Explanation:

BUS because of the factor more the mass, more the kinetic energy.

HOPE this ANSWER will HELP you dear

Plz mark it as brainliest

Answer:

4) x/2. MENE tukka lgaya he. AP KSI or se confirm KR kena.

Answer:

2.4.8 m.....................

ANSWER:

HI MATE.

Angle of emergence is the angle made by the emergent ray with the normal to the surface. Emergent ray comes out from REFRACTING medium on which light is incident.

Hope you find this USEFUL.

The BACK of train will have to cover a TOTAL of 154 + 176 = 330 m

speed of train = 70.km 400M /H

=70400 m/h

= 70400/3600 m/s

= 19.5 m/s

time taken = 330÷19.5

= 16.875 s ans

ANSWER:

E=dv/dx

dx=dv/E

dx=3000/500

dx=6

ANSWER:

QUESTION is not COMPLETE

Answer:

100 m

Explanation:

DISTANCE TRAVELLED by train to cross the man = Length of the train = L

Distance = Speed × Time

L = (36 × 5/18 m/s) × 10 s

L = 100 m

Length of the PLATFORM = L'

Distance travelled by train to COMPLETELY cross the platform = L + L' = 100 m + L'

Distance = Speed × Time

100 m + L' = (36 × 5/18 m/s) × 20 s

100 m + L' = 200 m

L' = 100 m

Answer:

1080km

Explanation:

1 SEC -----------------> 15m

20*60*60 sec ------------------------->15*20*60*60

                                                    =>1080000 m

                                                    = 1080km

ANSWER:

A train, 360 mts long, is running at a speed of 45 kms/hr. How MUCH time will it TAKE to CROSS a BRIDGE which is 140 mts long?

Explanation:

ANSWER:

fs=umg

fs=0.4×120=48

Answer:

The EQUATION for the centripetal acceleration is a = v2/r. That is, acceleration is inversely proportional to the RADIUS of the CIRCLE. If the radius is doubled, then the acceleration is HALVED.

Answer:

10m/s

Explanation:

the AVERAGE SPEED is 900/25 km/hr

1km=1000m

1hr=3600sec

900/25=36km/hr

= 36*1000/(3600)

=10m/s

ANSWER:

UNIFORM ACCELERATION it TRAVELS a DISTANCE

ANSWER:

PITCH is the PROPERTY of sound that ALLOWS ordering on a FREQUENCY related scale

ANSWER:

the TOTAL MECHANICAL ENERGY E

Explanation:

as we know

average SPEED=

TOTAL DISTANCE traveled/total time.

let he travels distance S from a to B

so we have total distance =2S

time to go from a to b =S/4

time to go from b to a= S/5

so we have total time =S/4 +S/5

that is =9S/20

now ACC. to formula,

average speed =2S/{9S÷20}

=40/9km/hour.

ANSWER:

coefficient of linear EXPANSION. The coefficient of linear expansion is the change in length of a specimen one unit long when its temperature is changed by one degree (see linear expansion). ... If these FORCES are strong, the MATERIAL can only expand slightly for a given rise in temperature.

Your ANSWER is in the PINNED PHOTO..

EXPLANATION:

YOO ✌️

Answer:

1) I THINK DIVER has heard it first because sound's microwave first hit WATER and reach till diver

2) t-2

ANSWER:

momentum is the PRODUCT if MASS and velocity.It is also rate of change of force is DP= df/dt

MARK AS BRANLIEST.....,...

If you Google it you WOULD GET AROUND 8 points.

Please try

Answer:

ACC. to OHM's law :-

V = IR

R = 10ohm

V = 5V

5 = I × 10

5/10 = I

1/2 = I

0.5 = I

The current is 0.5Ampere.

Answer:

A perfect gas at 27°C is heated at constant pressure till its VOLUME is doubled. What will be its final temperature?

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Using gas equation, we have

(P1*V1) /T1=(P2*V2) /T2 where P=Pressure, V=Volume and T=Absolute temperature of the gas.

Given, P1=P2=P(say) (Since pressure is constant)

V1=V(say), where V is the initial volume of the gas.

Therefore, V2=2V since final volume is double the initial volume.

T1=(27+273)K=300K

T2=?

Substituting the values obtained,in the gas equation, we have

P*V/300=P*2V/T2

Solving, we get T2=final temperature of the gas=600K or (600–273)degree C or 327 degrees C.

Explanation:

Ideal gas equation is pv= mRT ,

In present case , pressure is constant. Thus ideal gas equation can be rewritten as

v/T = mR/p = constant ( since 'mass' and 'characteristic gas constant' are going to be remain same)

Thus,

T2/T1 = v2/v1 ( but in question it was given, v2 = 2×v1)

That is,

T2/(27+273) = 2× v1/v1 ( 273 is added with 27°C to convert in Kelvin)

T2=2×300

T2= 600 k i.e. 327°C( that is your final temperature)

ANSWER:

The SPEED of SOUND , ACCORDING to this QUESTION,is 170m/sec

ANSWER:

The VELOCITY of the 3RD PART will be 12m/sec

HC Verma

I would SUGGEST you to refer this book for more efficient study than the first book which you have mentioned.

HOPE so it may help you

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The focal length of the pin is 30 cm.

Explanation:

Correct statement:

A 10 mm long awl pin is placed VERTICALLY in front of a concave mirror.A 5 mm long awl pin is formed at a distance of 30 cm in front of mirror.Find the focal length of the mirror?​

Solution:

size of object = O = 10.0 mm = 1.0 cm (as, 1 cm = 10 mm)

Size of the image = 0.5 cm                                                      

Image distance(v) = −30 cm  

Let the object distance be u.

Focal length = ??

Magnification (m)= -v/u

I/O = -v/u

0.5/1 = -30/u

= -60 cm

By using lens mirror formula 1/f = 1/v + 1/u

= 1/-30 +1/-60

= -2-1/60

= -3/60

= 20 cm

Focal length(f) = 30 cm

Thus the focal length of the pin is 30 cm.

Also LEARN more

How FAR should an object be from the pole of a concave mirror of focal length 20 cm to form a real image WHOSE size is 1/5th of the object.?

brainly.in/question/2660092

Answer:

SORRY i am busy in COLLECTING POINTS so try some ONE else dude.

Explanation:

sorry i am busy in collecting points so try some one else dude.