Explore topic-wise InterviewSolutions in Current Affairs.

Explanation:

every ACTION has equal and opposite reaction but they never cancel each other as they act UPON TWO DIFFERENT bodies

ANSWER:

in NITROGEN of 14 g hve more number of ELECTRON

Cyclotron is a device used to ACCELERATE charged particles to high energies. It was devised by Lawrence. Cyclotron works on the principle that a charged particle moving normal to a MAGNETIC field experiences magnetic lorentz force due to which the particle moves in a circular path. A cyclotron accelerates a charged particle BEAM using a high frequency alternating voltage which is APPLIED between two hollow "D"-shaped SHEET metal electrodes called "dees" inside a vacuum chamber.

Answer:

BOOK, Box, copy, chair, table, Bed, DOOR, pen STAND, bag and watch

Answer:

because it reverses the DIRECTION after equal intervals of time and the AC has HIGH voltage than DC COMING from POWER station

Answer:

sorry I don't KNOW this QUESTION ANSWERS but I know USING formula plz tell me formula

ANSWER:

In Original it is 9.81 But according to question

according to questionit is 9.78

Explanation:

GIVEN: R=6400km

angle= 60°

g=9.8m/s^2

angular velocity w=7.27×10^-5

g at 60° =?

sol^n:

g• = g - w^2r

but

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r=6400×sin60°

r=6400×0.867

r=5449km

so

g•=9.8 - (7.27×10^-5)^2×5449×10^3

{I.e 1km=1000m}

g•=9.8 - 0.0287

g•=9.772

Answer :

EXPLANATION :

GIVEN that :

A current of 1.0 A  exist in copper wire of CROSSECTION 1.0mm^2.

We know that :

Note :

• n is the number density of atoms.
• e is the charge on electron.
• A is area of cross section.

Gram atomic weight of Copper atom 63.5.

Number density of atoms :

★ Extra Information :

★ Current :

The flow of electricity CALLED current. The SI unit of current is Ampere (A). Current is denoted by the symbol I.

★ Speed :

Speed is the rate that how fast or slow something is. Speed is measurment that how somthing fast\slow move from here to there.

Answer

Voilet....

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Answer:

The particle will move along YZ plane along the DIRECTION of net FORCE

Explanation:

As we KNOW that there are four forces on the particle acting simultaneously

so we have

Now net force due to SUPERPOSITION of all forces

now we know that net force due to all is along YZ direction

So the direction of MOTION is along YZ Plane

#Learn

Topic : Resultant force

brainly.in/question/9860924

Explanation:

It may ALSO refer to the time-averaged distance between the CENTERS of the Earth and the Moon, or LESS commonly, the instantaneous Earth–Moon distance. The lunar distance is approximately 400 thousand KILOMETRES (250 thousand miles).

Answer:

1 Fossil fuels.

2 Thermal power plants.

3 HYDRO power plants.

4 Biomass.

5 WIND energy.

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Answer:

Static friction -

is a force that keeps an object at rest. It must be overcome to start MOVING the object. Once an object is in motion, it experiences kinetic friction. If a small amount of force is applied to an object, the static friction has an equal magnitude in the opposite direction.

Explanation:

sliding friction-

refers to the resistance created by two objects sliding against each other. This can also be called kinetic friction. Sliding friction is intended to stop an object from moving.

Fluid friction

describes the friction between layers of a viscous fluid that are moving RELATIVE to each other. Lubricated friction is a case of fluid friction where a LUBRICANT fluid separates two solid surfaces.

Rolling resistance,

sometimes called rolling friction or rolling drag, is the force resisting the motion when a body rolls on a surface. It is MAINLY caused by non-elastic effects; that is, not all the energy needed for deformation of the wheel, roadbed, etc. is recovered when the pressure is REMOVED.

EXPLANATION:

p=momentum.. HOPE it's will U HELP

Answer:

Kinetic ENERGY of gas MOLECULES is directly proportional to Temperature .

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Answer:

Sun PRODUCES heat ENERGY, and it is one that we can feel here on earth and it is this heat which sustains life on earth. ... so taking example from earth itself ,just think of US humans ,we produce sound by our vocal cords by it's vibrations and SIMILARLY we hear these SOUNDS ,when these sounds vibrate our ear drum.

Explanation:

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ANSWER:

WRITE your QUESTION CORRECTLY

Answer:

the linear velocity of the second's switch is 0.21 cm/s

Explanation:

Length of the SECONDS hand = 0.02 m

Since in 60 seconds the second's hand completes one FULL revolution

Therefore the DISTANCE COVERED in 1 second =

r is the radius which is equal to the length of the second's hand = 0.02 m

Therefore, distance covered in 60 seconds

m

Speed = Distance/Time

Speed of the second's hand

m/s

cm/s

Therefore the linear velocity of the second's switch is 0.21 cm/s

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ANSWER:

dont KNOW bro......

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Answer:

2 JOULE is the answer but i am not sure PLEASE send me the FORMULA

Answer:

2a square + 2 B square

Explanation:

we know that resultant of vector is equal to under root of a square + b square + 2 a b COS THETA THEREFORE by using this p square is equal to a square + b square + 2 a b cos theta and square is equal to a square + b square MINUS 2 a b cos theta by adding both answer is 2 a square + 2 b square

Answer:

6.2014×10^-8

Explanation:

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ANSWER:

F =R/2

R = 0.2

f= 0.2/2

answer : 0.1

EXPLANATION:

Your answer refer in Attachment

Thank you

Explanation:

In projectile motion at any instant we have two velocities components

either in X AXIS i.e = UCOS theta

or in y axis i.e = usin theta

so if we consider a velocity which is perpendicular for an instant that would be the vertical component of the velocity at the highest point i.e usin theta.

and the acceleration is provided by acc. due to GRAVITY which is perpendicularly downwards throughout the journey.

Refer to the attachment

At highest point of projectile for an instant the value of vertical component become zero.

and the value of the acceleration due to gravity is perpendicularly downwards.

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ANSWER:

HEY mate! Pls REFER ATTACHMENT for the answer

Answer:

(A) 160 gm-wt

(B) 80 cc

(C) 48 gm-wt

Explanation:

Let the weight of the piece of solid in air is W

Weight of piece of solid in water

= Weight of solid in air - bouyant force in water

= Weight of solid in air - weight of water displaced by the solid

Let the volume of the solid is V

Then the weight of water displaced = V × density of water × g

                                                            = V × 1 × g = VG

Thus

80G= W - Vg                           .............. (1)

Similarly for kerosene we can write the equation

100G = W - V × 0.8 × g

or, 100g = W - 0.8Vg                    ........ (2)

Multiplying eq (1) by 0.8 and subtracting it from eq (2)

100g - 64g = 0.2W

or, 0.2W = 32g

or, W = 32g/0.2 = 160g

Therefore, the weight of the piece of solid in air is 160 gm-wt

(B) Putting the value of W in eq (1)

80g = 160g - Vg

or, V = 160 - 80 = 80 cm³

(C) Weight of the liquid displaced = V × density of the liquid × g

                                                        = 80 × 1.4 × g = 112g

Therefore, weight of the piece of solid in the liquid

= Weight of the solid - Weight of the liquid displaced

= 160g - 112g

= 48G

Thus, weight of the solid = 48 gm-wt.

Hope this answer is helpful.

Answer:

Both bullets will collide at 180 m above GROUND , 50 m away from each building after 2 sec

Explanation:

two bullets are fired horizontally and simultaneously TOWARDS each other from roof tops of two buildings 100 m apart

=> Both bullets TOGETHER will travel 100 m horizontal Distance

Velocity of bullets are 25 m/s

25 * T  + 25 * T  = 100

=> T = 2 sec

After two secs bullets will collide

Vertical Distance COVERED in 2 sec using S = ut + (1/2)gt²

= 0 + (1/2)(10)*2²

= 20 m

200 - 20 = 180 m above ground

Both bullets will collide at 180 m above ground , 50 m away from each building after 2 sec

Answer:

CENTRE of Mass. The centre of mass (CoM) is the point relative to the system of particles in an object. This is that point of the system of particles that embarks the average position of the system in relation to the mass of the object. At the centre of mass, the weighted mass GIVES a sum EQUAL to ZERO.

ANSWER:As NICHROME is a alloy

Explanation:It cannot be HEATED easily so USED in heating DEVICE

Answer:

Clarinets and SAXOPHONES use a SINGLE reed strapped to the mouthpiece. Bassoons and OBOES have a DOUBLE reed that allows air to be blown between the reeds. The reeds then VIBRATE against each other to produce the sound.

Explanation:

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Answer: UNIT :- It is a standard used for one measurment .

Explanation:System of unit :-

1. MKS - meter kilogram SECOND

2.CGS - centimetre gram second

3. FPS - foot POUND second

ANSWER:FUNDAMENTAL units :- These are the units of FUNDS MENTAL physical quantity

Explanation:

Answer:

NEWTON's second LAW of MOTION pertains to the BEHAVIOR of objects for which all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.

Explanation:

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Answer:

(i) The final result will be that there will be 10 gram of water and 90 gram of ice at 0°C

(ii) Final temperature will be 0°C

Explanation:

At 100°C, the whole water would have been converted into steam

The heat required to bring the steam at 100°C to water at 100°C

Q₁ = m × Latent Heat of vapourisation

   = 100 × 540

   = 54000 calories

Again lets calculate how much heat is required to bring the temperature of water at 100°C to water at 0°C

If the sum of both the heats is less GREATER than 64800 then the water sill remain at some temperature above 0°C

Using

Q₂ = 100 × 1 × (100 - 0)

    = 10000 calories

Q₁ + Q₂ = 54000 + 10000 = 64000 calories

But the total heat that was EXTRACTED was 64800 calories

So still 64800 - 64000 calories = 800 calories of heat is left

Lets assume that m gram of water at 0°C is converted into ice at 0°C with this 800 calories

Then

Q = m × Latent Heat of fusion of ice

800 = m × 80

⇒ m =10 gram

Therefore at at 0°C, 10 gram of water will have converted into 10 gram of ice and 90 gram of water will remain at 0°C

Hope this answer is helpful to you.

Answer:

You will use Beer's LAW. A = εmCl

Explanation:

The basic idea here is to use a graph plotting Absorbance vs. Concentration of known solutions. Once you have that you can compare the absorbance value of an unknown SAMPLE to FIGURE out its concentration.

You will be applying Beer's law to calculate the concentration.

The equation for Beer's law is: A = εmCl

(A=absorbance, εm = molar extinction coefficient, C = concentration, l=path length of 1 cm)

You should have a data set which was used to create a standard curve. The graph should plot concentration (independent variable) on the x-axis and absorption (dependent variable) on the y axis.

You'll need to add a line of BEST fit to the data points and determine the equation for the line. The equation should be in y=mx + b form.

y = absorbance (A)

Note: no unit for absorbance

x = concentration (C)  

Note: unit is M or mol/L

m = (εm) = slope or the molar extinction coefficient in beers law which has units of  

M

−

1

c

m

−

1

So A = εmC +b

If you solve for C you should get

C = (A-b)/εm

So if you SUBSTRACT your y-intercept from the absorbance and divide by the slope, you are finding the concentration of your sample.

Answer:

Explanation:

Natural Frequency. ... Frequency (omega) is equal to the speed of vibration DIVIDED by the wavelength (lambda), . Other equations to calculate the natural frequency depend UPON the vibration system. Natural frequency can be either undamped or DAMPED, depending on whether the system has SIGNIFICANT damping.

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Answer:

because

1)in series rasistence is high as compaired to parallel.

2)if a device in series GET damaged the WHOLE CIRCUIT get broken.

3)CURRENT supply of all devices is same

EXPLANATION:

W=3t^3

P=w*t

Time=1sec

Hence power=3^3*1

=9watt

ANSWER:

both are correct.

action and REACTION

Answer:

7.2

Explanation:

FORMULA is s/v=t

And PUT in EQUATION

ANSWER:

A TEMPORAL paradox, TIME paradox, or time TRAVEL paradox is a paradox, an apparent contradiction, or a LOGICAL contradiction that is associated with the idea of time and time travel.

Answer:

10m/s

Explanation:

it COMPLETES 5 REVOLUTION in 10min

means complete 1 revolution in 10/5 MIN= 2 min

hence it TAKES 2MIN to cover 1200meter

hence speed is 1200m/2min

= 1200m/120sec

= 10m/s

ANSWER:

LENGTH of the WIRE INCREASES

ANSWER:

when is suffersone DIMENSIONAL INELASTIC

Answer:

Soda ACID Fire Extinguisher Information.Made from SODIUM carbonate (soda ash), soda ash is mined from trona ORE. The soda ash is dissolved in a solution containing carbon DIOXIDE. Sodium BICARBONATE precipitates out naturally.

ANSWER:

The temperature at which the end VELOCITY of OXYGEN molecules equal that of nitrogen molecules at 100degree CELSIUS is nearly about 1000°C.

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Answer:

Newton's First LAW explains the 'Law of Inertia' i.e ''A BODY in motion remains in the STATE of motion unless an untill an external unbalanced force is applied to it''

Newton's Third law of motion states that "Every action has an equal, opposite and instantaneous reaction".

Newton's SECOND Law of of motion states that "When a force it applied to an body it accelerates in the same direction of force applied".

i.e Force= Mass × acceleration

RELATION BETWEEN THE FIRST AND SECOND LAW FOR THIRD LAW IS THAT:-

• When body was at rest (Inertia) it was in same state of motion because there was no external force applied to it.
• According to second and third law the ''''every action has equal and opposite reaction''" and second Law states '"force is applied in the direction of force""
• THEREFORE, when reaction of force takes in direction of force.

Thus first and third law when combined forms the second Law

i.e F= m×a

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Answer:

it will pass undeviated since the angle of incidence is 90 DEGREE

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