6 Write down an expression for the velocity ratio of a pair of gear wheels.
What is the number of teeth in the driving wheel if the driven wheel has
60 teeth and the velocity ratio of the gear is 0.4? Why is this gear not
powerful to move a heavy car from rest?
No of teeth in the driven wheel
Hint: V. R.=
No of teeth in the driving wheel​

It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.2 gpa). as one goes deeper and deeper in the ocean, the pressure increases by 10000 pa for every meter below the surface. if a diver goes down 80.0 m in the ocean, by how much does each cubic centimeter of her blood change in volume? give the answer in cubic centimeters (actually one cubic centimeter equals one milliliter).