9 - Dimensional Analysis Questions Answers

two forces P and Q act at a point and have a resultant R.if Q be replaced by (R^2-P^2)/Q acting in the direction opposite to that of Q,show that the resultant is still of magnitude R
Asked By: KHUSHBOO AGGARWAL 4 year ago

A man walks over a rough surface. The angle between the force of friction and the instantaneous velocity of the man is-

A.      π

B.      π/2

C.      Zero

D.      2π

Asked By: VIKAS 5 year ago

A man walks over a rough surface. The angle between the force of friction and the instantaneous velocity of the man is-

A.      π

B.      π/2

C.      Zero

D.      2π

Asked By: VIKAS 5 year ago

rain is falling down vertically 2m/s. a person is walking with velocity 2m/s on horizantal road. the angle made by the umbrella with vertical to protect from rain is

Asked By: VISHISTA 6 year ago
Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)
Tan inverse 2/2 = 45 degree

In equation y = x2 cos2 2π (βγ/α) , the units of x, α , β are m , s-1 ans (ms-1)-1 respectively. The units of y and γ are ....?

Asked By: SWATI KAPOOR 6 year agoSolved By: AKSHAY TIWARY
is this question helpfull: 7 3 read solutions ( 1 ) | submit your answer IF 2sin2220 = p+qcosθ, FIND SMALLEST POSITIVE VALUE OF θ, WHEN p=1 AND q = -1.

Asked By: SARIKA SHARMA 7 year ago
is this question helpfull: 7 3 read solutions ( 4 ) | submit your answer
Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

2sin222.5 = 1- cos45 = 1 + (-1)cos45

so θ = 45

what is the formula for hole mobility in a semiconductor. ( not dimensional formula ,that i will find myself)

Asked By: SARIKA SHARMA 7 year ago
Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

hole mobility  = velocity of hole/electric field applied

the force acting on a particle varies with displacement a/c to relatn F=ax1/2 +bsin (kx+o)

then which of the following expressn is meaningful?

1) F+b

2) (a2/kb) +o

3) a+b

4)(  a/b) +o

Asked By: SARIKA SHARMA 7 year agoSolved By: NIKHIL VARSHNEY
is this question helpfull: 6 3 read solutions ( 1 ) | submit your answer

Q WHICH SET CAN'T ENTER INTO THE LIST OF FUNDAMENTAL QUANTITIES IN ANY SYSTEM

a) lenth, mass, velocity

b)lenth, time,velocity

c) mass, time, velocity

d)lenth, time,mass

OPTn B IS CORRECT BUT I WANT TO KNOW THE REASON

Asked By: SARIKA 7 year agoSolved By: NIKHIL VARSHNEY
is this question helpfull: 8 7 read solutions ( 2 ) | submit your answer