The US Army's MH-47E Chinook helicopter is used as a heavy lift vehicle. The rotor has three blades that rotate with a frequency f of 225 revolutions per minute. What is the angular velocity ω of the blades, measured in radians per second?

Explanation:

Given that, the rotor has three blades that rotate with a frequency f of 225 revolutions per minute. We need to find the angular velocity of the blade in radian per second.

Since,

So, the angular velocity becomes :

Hence, this is the required solution.

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when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27