A fan has a bladed rotor of 30 cm outside diameter and 12 cm inside diameter and turns at rate ω = 180 rad/s. The width of each rotor blade is 2.7 cm and the volume flow rate is Q = 0.1 m3 /s. The absolute velocity of the air (rho = 1.23 kg/m3 ) at blade inlet, V1, is purely radial. What would be a reasonable blade inlet angle (measured with respect to the tangential direction at the inside diameter of the rotor)?

We all use gps today, even if we don't drive yet. i bet you have been in the car with a parent and they have asked you to get out your phone to find a specific location. in your car, on the phone, you are using a very sophisticated technology. gps satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. gps receivers take this information and use trilateration to calculate the user's exact location. essentially, the gps receiver compares the time a signal was transmitted by a satellite with the time it was received. the time difference tells the gps receiver how far away the satellite is. now, with distance measurements from a few more satellites, the receiver can determine the user's position and display it on the unit's electronic map. what type of signal is utilized by the gps satellite?

Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.