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C.it means what a normal eye can see at a distance of 12 m. You need to move to 6 m to watch the same object due to the defect.

But there is no options like you answerd. please tell me the right option?

A negative charge of amount 1.5 × 10^−9 C is placed in the electric field E of 5.4 × 10^6 NC^-1

q = - 1.5 × 10^−9 C

Force experienced by the negative charge = F

∴F = qE

= - 1.5 × 10^−9 × 5.4 × 10^6

= - 8.1 × 10^−3 N

Let number of days required to complete work when 3 more man joined = x

Then,20*18 = 20*3 + 23*x

20*(18 - 3) = 23*x

20*15 = 23*x

x = 300/23 = 13

Therefore, 13 more days require to finish work

. The Universe is composed almost completely ofdarkenergy,dark matter, and ordinarymatter.

Let us add a mass 'm' kg onto the raft to make it just sink .i.e.,the volume of raft is now completely immersed in water.

Let the volume of raft is V which is given by:V= (mass of raft)/(density of raft)=(120/600)m³=0.2 m³.

Now this volume is completely immersed in water hence the buoyancy provided by water must balance the weight of raft and the extra mass we have just added.

Hence,1000×0.2×g= (m+120)×g.(where 1000 is the density of water in Kg m⁻³ & g is the acceleration due to gravity .)

Solving it for mass-'m':-we get m=80Kg.

In given case mass of rocket is changing with time, but velocity of gases remained constant.Therefore Thrust=v (dm/dt) -eq(1)Where dm/dt is rate at which mass of gas is ejected.Resultant acceleration = Acceleration due to thrust (up) - acceleration due to gravity(down) 20 = a - 10 Or a = 30 is the acceleration produced by thrust According newton's second law of thrust=(mass)×(acceleration)...(2)

From equation (1) and (2) we getma=v ( dm/dt) 5000 × 30=800 ( dm/dt ) On solving equation for (dm/dt)we get(dm/dt)=187.5 kg/sec Answer:(c)

I = neAV20=10^29x1.6x10^(-19)x1x10^(-4)xVV=1.25x10^(-5)answer is B

3.75×10^-24 N is the right answer

3.75×10^-24N is the right answer

3.75×10^-24N is the right answer

10×10=20 ✓✓✓ I know only this

10×10=20. answer correct

thnx

Power rating of bulb is 40watts and 220vresistance of bulb,R=V²/p⇒220*220/40⇒1210ohmsmaximum voltage=220vmaximum current= 5 amp.Maximum resistance, when 'n' no of resistances are connected in parallel.R₁=v/I⇒220/5⇒44 ohmsNet resistance=R₁=r/n⇒44=1210/nn=27.5so 27 lamps can be lighted.

There are two types of pure substances that are Elements and Compounds. Examples of elements are: Iron, Silver, Gold, Mercury etc. Examples of compounds are: Water, Carbon dioxide, methane, vinegar etc.

Fossil fuelsinclude oil, natural gas and coal. When thesefossil fuelsareburned, they release carbon dioxide, methane, nitrogen and particulates into the atmosphere. ... The greenhouse effect refers to the rising temperaturescausedby the sun's energy being trapped in our atmosphere by these extra gases.Of the threefossil fuels, for a given amount of energy released, coal produces the most carbon dioxide and natural gas produces the least. Coal and oil release sulfur dioxide gas when theyburn, which causes breathingproblemsfor living creatures and contributes to acid rain

6N

right answer is 4N

yes 4N U need an explanation for it?

Current is the amount of charge passing through a conductor in a particular interval of time.

So according to the definition, the formula for the current is:

I = Q/t

I = 2 A and t = 1 sec

Therefore,

Q = I*t

Q = 2*1 = 2 C

One electon consists of a charge of 1.6*10^-19 C. Then the number of electrons passing would be:

Q = n*e

n = Q/e

n = 2/(1.6*10^-19) = 1.25*10^19 electrons.

I didn't understand properly

plz say again

B that is a time varying electric field

B that is a time varying electric field

B a time varying electric field

Displacement currentis not an electriccurrent caused dueto moving of charges(calleddisplacement current), but it iscaused bya time varying electric field.

(B) a time varying electric field

B. a time varying electric field

b because time varying electric field

Option B is the correct answer (a time varying electric field).

B) a time varying electric filed

B is the correct answer because a time varaying electric field

basically it is caused due to a time varying in electric field

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answer bata

5ohm

2+1+1 series that ll 44*4/4+4=22+2+1=5

The average velocity with which negative charge free electrons of a conductor get drifted towards the positive terminal of the battery is called Drift velocity from the basics of a motion the final velocity of a particle moving under the effect of constant acceleration is given by v=u+at h

This would cause the wires in the flex to get hot and might cause a fire or damage components within the appliance. ... The fuse has a thin piece of wire inside it, which is the weakest link in a circuit. If too much current flows, the fuse wire overheats and melts, breaking the circuit.

Total resistance = (6+3)//(12+3)= 9//15= 15*9/24= 5*9/8= 45/8 ohm

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kindly upload a clear image and mention the ques. you need to get solved.

bro please put the clear image

how is speed calculated in unit are they generally expressed

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Displacement is the shortest possible distance. And It CAN be negative, positive or even zero

Displacement is negative when- Suppose, I start from point X and move 50 m in front and then come back moving 60 m. Clearly, I've moved an extra 10 m. And it will be termed as negative displacement.

Displacement is positive when-You already know, If I move from point X to pint Y. I've covered certain distance and it can be termed as my positive displacement.

Displacement is zero when-I move from point X to point Y and then back to point X. This will create 0 displacement. It can also be seen in a circular path where I come back to my original place (Place wherein I started)

velocity is positive?

Displacement is the shortest possible distance. And It CAN be negative, positive or even zero

Displacement is negative when- Suppose, I start from point X and move 50 m in front and then come back moving 60 m. Clearly, I've moved an extra 10 m. And it will be termed as negative displacement.

Displacement is positive when-You already know, If I move from point X to pint Y. I've covered certain distance and it can be termed as my positive displacement.

Displacement is zero when-I move from point X to point Y and then back to point X. This will create 0 displacement. It can also be seen in a circular path where I come back to my original place (Place wherein I started)

Displacement is a vector quantity. It is the shortest possible distance. And It CAN be negative, positive or even zero

Displacement is negative when- Suppose, I start from point X and move 50 m in front and then come back moving 60 m. Clearly, I've moved an extra 10 m. And it will be termed as negative displacement.

Displacement is positive when-You already know, If I move from point X to pint Y. I've covered certain distance and it can be termed as my positive displacement.

Displacement is zero when-I move from point X to point Y and then back to point X. This will create 0 displacement. It can also be seen in a circular path where I come back to my original place (Place wherein I started)

A . XY

Explaination :Female have XY chromosome

ha thanks virat

Cloud cover over India as seen by INSAT-3D. The prediction of weather in the tropical regions, like India, is a major challenge