A ventilation fan has blades 0.25 m in radius rotating at 30 rpm. What is the tangential speed of each blade tip?
a. 0.02 m/s
c. 0.79 m/s
b. 0.52 m/s
d. 20 m/s
C
You might also like to view...
At what temperature would the root-mean-square speed (thermal speed) of oxygen molecules be 13.0 m/s? Assume that oxygen approximates an ideal gas. The mass of one O2 molecule is 5.312 × 10-26 kg. The Boltzmann constant is 1.38 × 10-23 J/K
A) 0.217 K B) 1800 K C) 5410 K D) 0.0666 K
The theory that inflation occurred in the early universe is incompatible with the theory of relativity
Indicate whether the statement is true or false
A neutron star ________ rapidly
Fill in the blank(s) with correct word
A bar magnet is attached solidly to a frictionless surface and its length is aligned with the x axis. To the right of the first magnet a short distance away is a second bar magnet with its center placed on the x axis and its length perpendicular to the x axis. The second magnet is free to move. Once placed in position at rest, which best describes the initial motion of the second magnet?
a. The magnet will move away from the fixed magnet. b. The magnet will not move. c. The magnet will move toward the fixed magnet. d. The magnet will start to rotate.