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is the answer A...???
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lol2.7 x 10 ^ 25 m ^-3 ... what is this mate...??? 2.7 into 10 raise to power 25m(what is this "m") raise to power -3...???
The car's average speed will be the quotient you receive when you divide the certain value for distance by that of the time. You'll get 40/2.5 = 16! The uncertainity could be calculated as: (I'm using *u* to represent uncertainity in .. )Hi everyone .. please help me out with this problem, i cannot understand the solution provided.
Q)In an experiment, a radio-controlled car takes 2.50 ± 0.05s to travel 40.0 ± 0.1m.
What is the car’s average speed and the uncertainty in this value?
(P.S :Source of the question is physics P1.may/june.2005)
yes buddy can u prove howis the answer A...???
thank you but ive tried that and the answer comes +/- 0.36 but the correct answer(as the mark scheme shows) is +/- 0.4 .....The car's average speed will be the quotient you receive when you divide the certain value for distance by that of the time. You'll get 40/2.5 = 16! The uncertainity could be calculated as: (I'm using *u* to represent uncertainity in .. )
uSpeed/actual value of speed obtained = udistance/actual value of distance + utime/actual value of time
Can anyone solve m/j 04 paper 2 question 1(b) and 2(b)?
Thanks.
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_22.pdf
asalamoalikum wanted to ask something.... can we use 2as = v^2 - u^2 ?? in the Q2 (a)(ii) ?
thanks alot and JazakAllah
Yeah the answer is written as 0.4 because uncertainity is always given to 1 significant figure!thank you but ive tried that and the answer comes +/- 0.36 but the correct answer(as the mark scheme shows) is +/- 0.4 .....
all i am asking is that, is the sf changed into 1(rounded off in 1 decimal place), or anything else....?
I think we can! Did you try getting out the answer using this formula?anyone?
yes buddy can u prove how
Hey buddies could someone please help me with these questions ? It's from the physics Cambridge book.
Here :
Question 1 .
The number of molecules per cubic metre of air at standard temperature and pressure is about 2.7 x 10 ^ 25 m ^-3 .
What is the average separation of these molecules ?
ANSWER : 3.3 x 10 ^ -9
Question 2.
A metal box in the form of a cube of side 30 cm is filled with air at atmospheric pressure (1.01 x 10 ^5 Pa ) at 15 degrees Celsius. The box is sealed and heated in an oven to 200 degrees Celsius. Calculate the net force on each side of the box.
ANSWER : 5.8 x 10^3 N
Thanks in advance
Help
A motorist travelling at 10 m/s
can bring his car to rest in a distance of 10 m.
If he had been travelling at 30 m/s
, in what distance could he bring the car to rest using the same
braking force?
I have no idea how to solve this... Plz help!
http://olevel.sourceforge.net/papers/hey i want the link for phys june 2012 papers........guys guide me
The easiest way to do this is to substitute V with a number such as 10. So X would be 10 cos angle and Y would be 10 sin angle. Substitute in two angles, for example 30 degrees and 60 degrees. Then compare the X and Y obtained from the two different angles.
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