Wednesday

November 26, 2014

November 26, 2014

Posted by **meera** on Friday, October 1, 2010 at 7:03am.

= 0 is given by

x=1/2at^2 + bt3 . Find the dimensions of a and b.

If y = C1 sin (C2 t)

where y is a distance and t is the time. What are the dimensions of C1 and

C2 ?.

- - Physic college -
**bobpursley**, Friday, October 1, 2010 at 9:00amx=1/2 a t^2 + bt^3

if at^2 is distance, then a must be distance/time^2

b has to be distance per time^3

If y is distance, C1 must be distance. C2 must be 1/time

- - Physic college -
**meera**, Friday, October 1, 2010 at 10:34amif at^2 is distance, then a must be distance/time^2

okay but from where can i get distance ?!

i mean as a number !

also here sin (C2 t) i think it is constant so we can't take dimension or i am wrong :(

Again Thank u a lot :D

- - Physic college -
**bobpursley**, Friday, October 1, 2010 at 10:46amYou are solving dimensional analysis here, just the dimensions. There are no numbers.

The argument in a trig function is in radians, So C2*time must divide out all units, so C2 is 1/time.

- - Physic college -
**meera**, Saturday, October 2, 2010 at 3:48pmshould we divied it , I mean solve it like

x = 1/2at^2 ,x= bt^3 and take each part individual !

how can get red of (sin) from this formula ,

also here should i handle it individual !

- - Physic college -
**sa**, Sunday, September 18, 2011 at 9:07pmaf

**Answer this Question**

**Related Questions**

Physic - Consider the equation v = (1/4)zxt^2. The dimensions of the variables v...

AP Physics - can you please explain this to me... Were given this eqaution x = ...

Math - The passenger section of a train has width 2x-7, length 2x+3 and height x...

math - the passenger section of a train has width 2x-7, length 2x+3, and height ...

Calculus - In a test run, a new train travels along a straight-line track. Data ...

Calculus - In a test run, a new train travels along a straight-line track. Data ...

Physics - Stuck again. The paper just says that the position of an object is ...

physics - a train slows down from 104m/s to 76m/s with constant decceleration in...

College Physics - The electric motor of a model train accelerates the train from...

college algebra - given the function fx=x^3+x a) find the rate of change between...