• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Physics: Post your doubts here!

Messages
300
Reaction score
138
Points
53
Fornite is free-to-play but you have to buy player's unknown battleground for pc, though it's free-to-play on mobile.
 
Messages
884
Reaction score
449
Points
73
the last graph, shouldnt it have a curve at start? which was option C
Yes I did C too because from the start the velocity wasn't constant, it was increasing...it would have been A if the velocity was constant at the start
 
Messages
26
Reaction score
4
Points
3
It has to be A i guess. C was zero for some more time . Most of my smart friends in lahore have put A. Lets see though. C is also a common ans
 
Messages
1
Reaction score
0
Points
1
can pls help ques 34
ans is D but i don't know why
 

Attachments

  • 9702_m16_1_2_qp.pdf
    243 KB · Views: 11
Messages
103
Reaction score
1,308
Points
153
Hi
What is a mass of particle moving with a speed if light and why
Ftinite
Infinite
Zero
Unity?
 
Messages
24
Reaction score
17
Points
3
Hi
What is a mass of particle moving with a speed if light and why
Ftinite
Infinite
Zero
Unity?

It's complicated. First off, a particle cannot travel at the speed of light. But let's say that it's travelling very very close to speed of light. Particle will feel like it is travelling at very high speed. An observer will feel like the particle is stationary.

The option unity doesn't make sense because it's dimensionless.
 
Messages
103
Reaction score
1,308
Points
153
It's complicated. First off, a particle cannot travel at the speed of light. But let's say that it's travelling very very close to speed of light. Particle will feel like it is travelling at very high speed. An observer will feel like the particle is stationary.

The option unity doesn't make sense because it's dimensionless.
So from an observer's perspective mass is zero right?
 
Messages
665
Reaction score
13,609
Points
503
So from an observer's perspective mass is zero right?
Well I think that how the object appears depends on whether the observer is stationary or moving away from or towards the object
According to the theory of relativity, the object will appear contracted if the observer is stationary.
 
Top