7. [displacement 8. [area× volume] 9. [0.5x volume 9- Determine whether the foll

Question

7. [displacement 8. [area× volume] 9. [0.5x volume 9- Determine whether the following equations are dimensionally correct. x= x-+ vo t + (1/2) a t2 where x is the displacement at time t xo is the displacement at time t-0 vo is the velocity at time t 0 a is the constant acceleration where P is pressure p is density g is gravitational acceleration and h is the height 10- Choose the correct answer 1. Which symbol represents the Dimension of Length 2. The SI unit of velocity is b) N c) m/s d) m meter 3. 1 Nano-meter- d) 10e) 10 12 4. 20 Mega-pixel -... pixel b) 4x101/ic),2x1010 . d) 2x10% 5. If you have a box its dimension 2 meter length and 50 cm width and height 1 meter, then its volume is: 2 cm2 d)2 cm 11- Use dimensional analysis to check the validity of the following Equations: 2x+vt = a, and u-te-at 26

Explanation / Answer

question no 10

1. (a) [M]

2. (d) m/s

3. (a) 10^-9

4. (d) 2*10^7

5. (a) volume= l*w*h = 2*0.5*1=1m^3

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