Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

Ampere is the flow of electric charges through a surface at the rate of one coulomb PER second. This MEANS if 1 coulomb of electric charge flows through a cross section for 1 second, it WOULD be equal to 1 ampere.

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Answer:

Metals react with water and produce a metal oxide and hydrogen gas. ... It reacts with hot water to FORM magnesium hydroxide and hydrogen. It also starts floating due to the bubbles of hydrogen gas STICKING to its SURFACE. Metals like ALUMINIUM, iron and zinc do not react either with COLD or hot water.

Explanation:

Science involves exploring, experimenting and speculating phenomena happening around us. The word Science is derived from a latin VERB Scientiameaning 'to know'. Scientific METHOD is a way to gain knowledge in a SYSTEMATIC and in-depth way. ... Controlled EXPERIMENTS.

Answer:

When the air is removed from a balloon, the balloon collapses because air exerts pressure on the walls of the balloon. ... Also, when the air is removed from the balloon, the pressure INSIDE the balloon will be much less than the ATMOSPHERIC pressure outside and thus the balloon collapses.

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ANSWER:

the answer as WELL as the SOLUTION is in the IMAGE

ANSWER:

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Explanation:

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Explanation:

Let the speed of the bullet be V. Let the common velocity of the bullet and the bob, after the bullet is EMBEDDED into the bob, is V. By the principle of conservation of the LINEAR momentum,

V=0.45kg+0.05kg(0.05kg)v=10v

The string becomes loose and the bob will go up with an ACCELERATION of g=9.8m/s2. As it comes to rest at a height of 1.8 m, using the EQUATION v2=u2+2ax,

1.8m=2×10m/s2(v/10)2

or v=60m/s.

ANSWER:

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ANSWER:

hello hm H na BOLO Mr. (♡ω♡ ) ~♪

Explanation:

CORRECT option is

A

-0.25 m s−1

Initial momentum of the system  Pi=0

Given:  Mbullet=0.02 KG      Vbullet=100 m/s         Mgun=8 kg

Let the RECOIL velocity of gun be V.

Applying the conservation of LINEAR momentum :  Pf=Pi

Or   MgunV+MbulletVbullet=0

Or   8V+0.02×100=0

⟹ V=−0.25 m/s

Conditions for MINIMUM DEVIATION:

• angle of INCIDENCE(i) = angle of emergence(e)
• R1 = r2 = A/2
• A = refracting angle.
• 

Solution:

★ Angle of incidence is 47°

------------------------------------------

EXPLANATION:

Here, initial velocity of sphere, u=0

Distance TRAVELLED, s=80cm=0.8m

Acceleration of sphere, a=10ms−2

Final velocity of sphere when it just reaches the GROUND can be CALCULATED using

v2−u2=2as

∴v2−0=2×10×0.8=16

or v=16=4ms−1.

Momentum of the sphere just before it touches the ground =mv=10×4=40kgms−1

EXPLANATION:

its HORIZONTAL COMPONENT will be 5 cos 30 put COS30 value in it and u will get 8.7 as an ans

Solution

Given:

Focal length of CONCAVE mirror, F = -20 cm

Distance of object from the mirror, U = -10 cm

use formula, 1/v + 1/u = 1/f

or, 1/v = 1/f - 1/u

or, 1/v = 1/-20 - 1/-10

or, 1/v = -1/20 + 1/10 = 1/20

or, v = +20cm

hence, IMAGE position is the 20cm right side from the pole of the concave mirror as SHOWN in the diagram. The image is

ANSWER:

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Explanation:

REPLY to my answer REY ababbsba

EXPLANATION:

V

y

=V

X

=U

x

=ucosα

⇒ucosα=usinα−gt

gt=u(sinα−cosα)

t=

g

u(sinα−cosα)

EXPLANATION:

Velocity of wind will be added to velocity of RAIN 

Velocity of rain Vr=4(−j^) m/s

Velocity of wind Vw=3(i^) m/s

Net velocity V=Vr+Vw

=3i^+(−4j^)

angle from vertical will be θ=tan−1∣−4∣3=37o.

ANSWER:

Is TODAY KOOKIE BIRTHDAY????

Explanation:

0M&

a CYCLONE is a large scale air mass that rotates around a strong center of low atmospheric pressure, COUNTERCLOCKWISE in the Northern HEMISPHERE and clockwise in the Southern Hemisphere as viewed from above. Cyclones are characterized by inward-spiraling winds that rotate about a ZONE of low pressure. 

1. চাপের SI এককটি হল—N m^2

2. একটি বস্তুকে স্থির প্রবাহীতে নিমজ্জিত করলে বস্তুটির ওজন - একই থাকে

3. বৃষ্টির ফোটার আকার - গোলাকার

Answer:

This EQUATION, i = v/r, tells us that the current, i, flowing through a circuit is DIRECTLY proportional to the voltage, v, and INVERSELY proportional to the RESISTANCE, r. In other WORDS, if we increase the voltage, then the current will increase. But, if we increase the resistance, then the current will decrease.

Answer:

Among these sources, HYDROELECTRICITY is considered to be CLEAN and an EFFICIENT source of energy for long term use. The most significant disadvantage of CONVENTIONAL sources of energy is that they tend to pollute the environment. They are also very limited and finite in terms of quantity available for extraction.

ANSWER:

There is a simple formula for CONVERTING radians to degrees. 1π RADIAN = 180°. Therefore you can convert one unit of MEASURE to the other easily. One degree is equal to 0.01745329252 radians.

ANSWER:

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ANSWER:

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Answer:

dark CLOTHES ABSORBS SUNLIGHT by 30%

ANSWER:

a form of energy resulting from the existence of charged particles (such as electrons or PROTONS), either statically as an accumulation of CHARGE or dynamically as a CURRENT.

Explanation:

Death. By the time he reached 80 years of age, Newton was experiencing digestion problems and had to drastically change his diet and MOBILITY. In March 1727, Newton experienced severe pain in his abdomen and BLACKED out, NEVER to regain consciousness. He died the next DAY, on March 31, 1727, at the age of 84.

ANSWER:

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EXPLANATION:

Dehydration can have CAUSES that aren't due to UNDERLYING disease. Examples include heat, excessive activity, insufficient fluid consumption, excessive SWEATING or MEDICATION side effects.

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If you are asking about revision then yes. This isn't easy being a long process-

Start working long time before and by this I mean when the chapter is being taught to you, hear with CONCENTRATION in class and try to make the most out of it be it your school or your tution. Generally people avoid school lectures but I FEEL that shouldn't.

Practice the numericals from class notes they can help clear concept and doe extra questions related to it. Gradually take your level up.

Mark the important points, derivations and important questions from the material you have practices and gone through and compress them into a few white A4 sheets or in a separate register neatly. Write important formulas at the end of the chapter collectively.

A important thing is that not all formulas are to be learnt. Only a few are the basic formulas which when learn along with UNDERSTANDING the concept you will be able to make formulas for other things. Like if you know the formula for magnetic field due to a finite wire then you can make formulas for any wire be it infinite or semi infinite.

Also add the tables in the Ncert given at the back of each chapter containing a few constants etc their VALUES and dimensions in your notes they can be helpful.

I prefer loose sheets for the notes because you can always add up questions or points.

When you have this kind of compressed collection of hand written (your handwriting) notes and questions (which shall be self explanatory) you can actually revise Physics very quickly.

This way you can concentrate on your weak areas and get more time for solving papers before exams

The problem arises when you have not WORKED hard from the beginning and you still wish to be lazy. If you haven't already started taking these compressed notes do it now. They will be handy for revision. You will be able to revise quickly with them and save a lot of time at the last moment.

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Answer:

192 ohm

Explanation:

the POWER of TOW CONDITION should be same.

Explanation:

the production of SILK and the REARING of SILKWORMS for this purpose.

@llMrKaminall❤️

ANSWER....

Given

Body moves with ACCELERATION of 3m/ s

for 2 seconds.

and,Body moves with acceleration of

4m/s for 3 seconds.

t 2 seconds.

t 3 seconds.

Erplanation :

TOTAL time = 2 +3 = 5 seconds.

From the average acceleration formula.

Let the acceleration be a'.Let the acceleration be a'

a't at + a"t?.

a'(5) = 3 X 2 + 4 x3

a= 6+12

5

a= 3.6

a=3.6m/s|

So, average acceleration of body is 3.6

m/s2

ANSWER:

just do some FILLUPS, mcqs for theorem QUES pracitce and for numericals do MANY ques and then correct your mistake

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EXPLANATION:

the QUANTITY of motion of a moving BODY, measured as a product of its MASS and VELOCITY.

ANSWER:

CORRECT answer is bhosdaaaaaaaaaa

Answer:

YUP I KNOW

but APEKSHA ALSO MEANS "wait"

Explanation:

When a BODY is whirled in a circle the work done is zero because in CIRCULAR motion displacement  is always perpendicular to the applied force. ALSO when a body moves along a circular path then the CENTRIPETAL force ACTS along the radius of the circle and is at right angle to the motion of the body .Thus work done by centripetal force is zero when the radial position does not change i.e when an object moves at  angle of 90 degree with the direction of force.

Work done = F.x Cosθ = F.xCos 90 = 0 (Since Cos 90 = 0)

ANSWER:

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Answer:

Explanation:

: if an object CROSSES EQUAL distance in equal intervals of TIME the object is moving at uniform VELOCITY.

In an ELECTRIC circuit, when the electric charge is flowing in one direction, the CURRENT will flow in the opposite direction.

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EXPLANATION:

U(INITIAL velocity)=15m/s

s=vt =30×4=120m

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Answer:

PHOTOSYNTHESIS is the process used by plants, algae and certain bacteria to HARNESS energy from sunlight and turn it into chemical energy. Here, we describe the general PRINCIPLES of photosynthesis and HIGHLIGHT how SCIENTISTS are studying this natural process to help develop clean fuels and sources of renewable energy.

ANSWER:

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