An air-filled pipe is found to have successive harmonics at 1120 hz , 1440 hz , and 1760 hz . it is unknown whether harmonics below 1120 hz and above 1760 hz exist in the pipe. what is the length of the pipe?

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

Describe the function of the endomembrane system? what organelles are involved?

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.