A wire with mass 40 g is stretched so that it’s ends are tied down at points 80cm apart. The wire vibrates in its fundamental mode with frequency 60Hz and amplitude of 0.3 cm at antibodies. What is the speed of propagation of transverse waves in the wire?

The path of a satellite orbiting the earth causes it to pass directly over two tracking stations a and b, which are 51 miles apart. when the satellite is on one side of the two stations, the angles of elevation at a and b are measured to be 87 degrees and 84 degrees, respectively. (a) how far is the satellite from station a? (b) how high is the satellite above the ground?