- Messages
- 31
- Reaction score
- 13
- Points
- 18
exact valueWHEN WE ROUND OFF AN ANSWER TO AN APPROPRIATE NO OF SIGNIFICANT FIGURES, DO WE USE THE ROUNDED VALUE OR THE EXACT VALUE IN THE NEXT PART???
HELP.. PLZ REPLY
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)
exact valueWHEN WE ROUND OFF AN ANSWER TO AN APPROPRIATE NO OF SIGNIFICANT FIGURES, DO WE USE THE ROUNDED VALUE OR THE EXACT VALUE IN THE NEXT PART???
HELP.. PLZ REPLY
then your book is wrong...100/240 is the same as 5/12 which will give an answer of 0.416i knw its 0.42 but in the book it says its 2.4
ok but do u have the answer or ur asking cause u NEED an answer?ty. and this is the whole question basically. A cyclist is travelling at constant speed so why will his chemical energy not convert to kinetic energy. I know that the energy change will be kinetic to heat and sound energy but why will the chemical energy not be converted to K.e thts the question.
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s07_qp_2.pdf
in question 2 (c)(i) why arent we using equations of motion?
ok then
for the first row the power dissipated is obviously 0 because the circuit is incomplete so no electricty will flow
2nd row current will always go through the route with less resistance so power is 1.5kW as current "avoids" B
3rd current will only flow through A + C so total is 3.0kW
4th p= V^2/r since the resistors are in series voltage is shared equally since they have same electrical requirements so V is halfed while R remains constant so new voltage is (0.5v)^2 which is 0.25v^2 so P= 2*(0.25*240^2)/38.4 =750
5th 0.75kW + 1.5kW =2.25kW
hope it helped : D
well an antinode is 1/4 of a wavelengh right? so given that l=45cm the antinode is 45 cm and wavelengh is 0.45x4=1.8 m aand u calculate the frequency from v=fxwavelengh
How is P=Fv derived?
A question from pastpaper:Explain why a cyclist travelling at a constant speed is not making this trnasformation. Explain what transformations are taking place?
can you please explain the highlighted part?
Plz anyone help me understand how Q. 2c of Oct/Nov 2011(21) is done..
Show that a 100W lamp connected to a mains supply of 240V will have the same current as a 5W car lamp connected to a 12V? ans- current in both is 2.4A
can someone explain =D
anybody?
because there is no equation of motion which applies to what you have
you don't have v or t and all equations require either v or t or both
okay thanks...
can these equations be applied in vacuum? places without air resistance and gravity?
For almost 10 years, the site XtremePapers has been trying very hard to serve its users.
However, we are now struggling to cover its operational costs due to unforeseen circumstances. If we helped you in any way, kindly contribute and be the part of this effort. No act of kindness, no matter how small, is ever wasted.
Click here to Donate Now