0.05kgm-3
1.25kgm-3
1.30kgm-3
1.36kgm-3
Correct answer is D
Mp = 1 x 40 = 40kg ; mQ = 1.6 x 60 = 96kg
volume of mixture = 40 + 60 = 100m3
mass of mixture = 40 + 96 = 136kg
density of mixture = \(\frac{136}{100}\)
= 1.36kgm3
An inclined plane which makes an angle of 30o with the horizontal has a velocity ratio of
2
1
0.866
0.50
Correct answer is A
V.R = \(\frac{1}{sin\theta}\)
= \(\frac{1}{sin30}\)
= 2
0.30
0.50
0.58
0.87
Correct answer is C
n = tan 30 = 0.58
mh
mgh
\(\frac{mgh}{50}\)
0
Correct answer is D
work = mgh(no motion)
\(\frac{p}{v}\)
\(\frac{1}{2}\) v
pv
\(\frac{p}{v^2}\) v
Correct answer is A
power = speed x force
force = \(\frac{power}{speed}\)