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1.A wave of frequency 1200 Hz spred over a lenth of 10 m.

Wat is the wavelength?what is the speed?

2.A constant force of magnitude 10 N is applied on a 20 kg particle for 2s.Wat is acceleration of the paticle.If the particle starts from rest wat is its final velocity?


We know that velocity = wavelength ( distance ) * frequency...
putting the values...
2 F=10

F=ma ...10=20*aa=0.5m/s^2
by using v=u+at...calculate the final velocity!
1 5 1
no i did bt my ans doesnt matches the books one
V=f*wave length
v=10*1200=12000 m/s

2 F=10

F=ma ...10=20*aa=0.5m/s^2

1 4 1
wat is the final velocity
you can calulate it ver simply..........pls rate me and thank me i want more points
sry i'm unable to find
u=0,,now try and pls mark me
u calculated ri8 so wats the ans.
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