Biology; Chemistry; Physics: Post your doubts here!

[syed1995]

Another one ...

 

[bogus]

where ?? and yea the answer is B. I remembered it but I don't know WHY it is B.

elephantfurry physics is a website... cant find the link but google it

 

[ayeshaK]

Another one ...

Another one ...

UV !! Because it is a use !

 

[syed1995]

 

[syed1995]

elephantfurry physics is a website... cant find the link but google it

You in IGCSE??

 

[ayeshaK]

its B !! Its a fact !

 

[Dukeofwin]

Another one ...

Its D, UV rays!
That is the reason why clothes are asked to dry in the sun since it cleans bacteria off it!

 

[bogus]

no

 

[bogus]

b?

 

[Dukeofwin]

Its a DC motor, 90(degree turn is taken to give the current) for which split rings are used! Its B because at vertical position current produced is zero

 

[Muhammad Zain Qasmi]

Asplane please.... :S

 

[syed1995]

Oh wait nvm .. got the answer I forgot to convert the weight into mass!

 

[syed1995]

C or D?

 

[Muhammad Zain Qasmi]

C or D?

D as the speed is constant...

 

[Dukeofwin]

C or D?

For me its a C because as the Potential energy decreases the Kinetic Energy increases

 

[Dukeofwin]

Oh wait nvm .. got the answer I forgot to convert the weight into mass!

I couldn't solve this, how did you get the answer?

 

[bogus]

Asplane please.... :S

b as increase in resistence across a component increases voltage across it in series combination

 

[Dukeofwin]

D as the speed is constant...

Yeah you are right it has to be D!
My bad

 

[bogus]

For me its a C because as the Potential energy decreases the Kinetic Energy increases

d as ke is constant whats the mark scheme answer

 

[ayeshaK]

C or D?

Its D !!! Because he hasnt landed on the ground yet !!!!