A 20.8 m long string is clamped at both ends and under 9.4 N of tension. It supports consecutive standing waves at 40 Hz and 50 Hz. What is the string mass density in g/m

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

In the first law of thermodynamics, triangle e=q-w, what does q stand for

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.