Post by: naved_s9994 on June 07, 2009, 09:20:32 pm
and its rider is 90Kg. What is its average acceleration?
Post by: appianway on June 07, 2009, 09:32:09 pm
d=1/2 at^2
d=16
t=4
16=16/2 *a
16=8a
a=2
Post by: naved_s9994 on June 07, 2009, 09:33:14 pm
Post by: appianway on June 07, 2009, 09:36:44 pm
Post by: naved_s9994 on June 07, 2009, 11:14:45 pm
Post by: /0 on June 07, 2009, 11:29:42 pm
Post by: TrueTears on June 07, 2009, 11:30:15 pm
AC and DC questions arnt in electronics anymore....are they???AC and DC questions will never be taken out of electronics :P
Post by: naved_s9994 on June 07, 2009, 11:49:13 pm
as in DC signal displayed on CRO screen
Post by: Flaming_Arrow on June 07, 2009, 11:50:39 pm
serz...but they werent in heinemass textit's in the study design
as in DC signal displayed on CRO screen
Post by: naved_s9994 on June 07, 2009, 11:51:27 pm
Post by: TrueTears on June 07, 2009, 11:51:45 pm
v rms?Yes , they are on the course.
Post by: naved_s9994 on June 07, 2009, 11:54:12 pm
and is dc, if displayed through a graph a straight line ( direct currect)
and ac is, like a sin wave? (alternative current?)
Post by: TrueTears on June 07, 2009, 11:57:09 pm
could you explain v rms formula..Yes, sometimes when AC is combined with DC, it is shifted vertically upwards, ie, AC and DC components.
and is dc, if displayed through a graph a straight line ( direct currect)
and ac is, like a sin wave? (alternative current?)
Post by: Flaming_Arrow on June 07, 2009, 11:57:34 pm
could you explain v rms formula..
and is dc, if displayed through a graph a straight line ( direct currect)
and ac is, like a sin wave? (alternative current?)
V_rms s the average voltage
Post by: TrueTears on June 07, 2009, 11:58:53 pm
Good thread on RMS, check it out naved 8-)
Post by: naved_s9994 on June 07, 2009, 11:59:23 pm
could you explain v rms formula..
and is dc, if displayed through a graph a straight line ( direct currect)
and ac is, like a sin wave? (alternative current?)
V_rms s the average voltage
Post by: naved_s9994 on June 08, 2009, 12:02:30 am
http://vcenotes.com/forum/index.php/topic,13529.0.html
Good thread on RMS, check it out naved 8-)
Thannkss!!
Post by: naved_s9994 on June 08, 2009, 12:04:56 am
Post by: simplicity123 on June 08, 2009, 08:27:29 am
Post by: Damo17 on June 08, 2009, 08:40:34 am
Post by: vamsiaus on June 08, 2009, 08:51:02 am
Thanks in advance to anyone who can help.
Post by: IntoTheNewWorld on June 08, 2009, 09:11:11 am
lol if we are working out gain for an inverted amplifier, do we actually put the negative in the answer or because it is a ratio do we leave it as positive.
Thanks in advance to anyone who can help.
the TSFX guy said leave it because gain has no units (which is not what my teacher says) =[
Post by: naved_s9994 on June 08, 2009, 09:45:39 am
lol if we are working out gain for an inverted amplifier, do we actually put the negative in the answer or because it is a ratio do we leave it as positive.
Thanks in advance to anyone who can help.
the TSFX guy said leave it because gain has no units (which is not what my teacher says) =[
Post by: vamsiaus on June 08, 2009, 09:48:52 am
Post by: naved_s9994 on June 08, 2009, 09:50:00 am
Post by: naved_s9994 on June 08, 2009, 09:53:22 am
Post by: Damo17 on June 08, 2009, 10:11:58 am
how would you define the effects of air resistance on an object
in most cases you are told to disregard air resistance. The only place it will possibly come up on is a projectile motion question just asking what the affect of air resistance is on the distance traveled of the projectile which you would have worked out from a previous question. In this case air resistance shortens the projectiles distance traveled.
Post by: IntoTheNewWorld on June 08, 2009, 10:15:06 am
how would you define the effects of air resistance on an object
Also when there are questions asking the net force acting on an object (and there are arrows to choose from) when airbourne in projectile motion or whatever, it will be angled slightly towards the left (if fired from the left) as opposed to straight down
Post by: naved_s9994 on June 08, 2009, 10:15:27 am
Thanks damo17
Post by: naved_s9994 on June 08, 2009, 10:16:30 am
Post by: naved_s9994 on June 08, 2009, 10:18:06 am
How to describe the transfer of information in analogue form (not including the technical aspects of
modulation and demodulation) - using light intenstiy modulation and demodulation?
This can get technical thats why ive posted it here.