Basic doubts in Physics

Please help in this one using the Projectile Vector Method.
@VasuBro @LaveshGupta @Deadpool

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What is expression for time?
(v_o) /(gsin \theta)
If this is correct
Then

Just write
Initial velocity vector in terms of i and j
Then
At any time time
Its velocity vector at which it must be perpendicular to inital velcoity vector is
v_o sin \theta i - (gt-v_osin\theta) j
Take their dot product =0 and u r set to go…

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Bina components liye bhi kar sakte hh

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Thanks @VasuBro
Thanks @LaveshGupta :smiley: . Yhi chhahye tha

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Ye physics sirjee ne uska inclined plane pe bhi iska variation kiya tha using vectors

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Iss diagram se v directly
{sin \theta = u/gt} likh sakte

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Plz koi iske diagram me help kar dena.bohot noob doubt hai but ban nhi rha :sweat:

Bro intersection point should be (3,0,0)…plane at x=3 is a plane parallel to yz plane passing through x=3.

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Yes it’s a point. I’m confused with the language. What do they mean by surface charge density?

I think it probably has something to do with conductors…they are probably considering a thin metal plate at x=3 and want to know the charge induced ig.

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Just a imagine a line charge (lambda=8nC/m) and 3m perpendiclusrly away from it thre is a point they have asked what is the surface charge density (q/A) ?
Now draw a cylinder apply gaus law and equate electric field (if you don’t remember result
2k\lambda/r = \sigma/ \epsilon (for a thin conductor with electric field in one direction )where \sigma is what you need to find
Soluchan tag de dena

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Thank You Guys @DrStrange @Anorak
Understood now :grin:

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Help in these two plzz…

@Kumar_Azad1 @LaveshGupta @Anorak @DrStrange @VictoryGod @BrouwerHilbert

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Thanks a lot bro :grin:

Second Wale me Ditto Waise hi rahega Jaise Rays Ki presence me hota means YDSE me Bs jo screen pe Hyperbolic shape Ki lines aati h wo Smoke se cover ho jayengi …
Delocalised Isliye rahega Kyunki frindge Width Change Ho jati h Different parameters pe unki position bhi Change ho skti h…

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exactly ab smoke se cover ho jayengi toh how evidence of interference everywhere b/w Barrier and Screen. shyd mujhe B statement smjh hi nhi aya. due to smoke, both maxima minima would be delocalised as u said…
but what does {Evidence \ of \ Intereference \ everywhere } mean

@VictoryGod ye point clr kr dena plz

Iska koi easirer way hain ?@LaveshGupta @VVaibhav @VictoryGod @VasuBro(its not basic btw,anyways)

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Maine jitne baar bhi solution dekha hh iska, sabne ek hi method se nikale hh ek ek karke options.

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but toh exam me isme irodov ki experience se a mark karke aage bad jaunga partial to he na

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