Posted by TOm on Wednesday, January 23, 2013 at 10:21pm.
The displacement of a particle in centimeters is given by y=8 sin (2πft).
If f=20 Hz, find the
displacement and the velocity of the particle at a time t=0.01 s and 0.07 s.
(ans: y=7.61 cm, v=3.11 m/s, y=4.70 cm, v= 8.13 m/s)
After I plug in f to get w and switch to this equation: Asin(wt  kx), plugging in the numbers doesn't give me the right answer.
Thank you

physics  TOm, Wednesday, January 23, 2013 at 10:49pm
nevermind, got it, had to switch calculator from degrees to radian, hehe