Multiple Choice
Flow rate: Water is flowing in a horizontal pipe of diameter d. If you want to change the diameter of this pipe so that the speed of the water would be half as great as it was, what should be the new diameter?
A) d/4
B) d/2
C) d/
D) d
E) 2d
Correct Answer:

Verified
Correct Answer:
Verified
Q28: Bernoulli's principle: A level pipe contains a
Q29: Viscosity: A flat horizontal plate of area
Q30: Pascal's principle: The small piston of a
Q31: Bernoulli's principle: When you blow some air
Q32: Bernoulli's principle: Incompressible water flows out of
Q34: Buoyancy: A 6.1-kg solid sphere, made of
Q35: Viscosity: Motor oil, with a viscosity of
Q36: Buoyancy: If you double the pressure on
Q37: Bernoulli's principle: A horizontal tube consists of
Q38: Density: A certain coin has a diameter