Avariable-length air column is placed just below a vibrating wire that is fixed at both ends. the length of the air column, open at one end, is gradually increased from zero until the first position of resonance is observed at =34.2 cm. the wire is 129 cm long and is vibrating in its third harmonic. if the speed of sound in air is 340 m/s, what is the speed of transverse waves in the wire? assume that the displacement antinode in the air column is exactly at the open end.

Jason and mia are both running in a race. as they approach the finish line, you being the physicist that you are decide to time how long it takes them to reach the end of the race. when you start your stop watch (you can take this as time t = 0 s) you notice that mia is an unknown distance d ahead of jason and both are moving with the same initial velocity v_0. you also notice that jason is accelerating at a constant rate of a_j, while mia is deaccelerating at a constant rate of -a_m. jason and mia meet each other for the first time at time t = t_1. at this time (t = t_1) jason's velocity is two times that of mia's velocity, meaning v_j (t_1) = 2v_m (t_1). a) draw the position vs. time graph describing mia's and jason's motion from time t = 0 to time t = t_1. clearly label your axes and initial conditions on your graph. b) draw the velocity vs. time graph describing mia and jason's motion from time t = 0s to time t = t_1. clearly label your axes and initial conditions on your graph. c) how long from when the stop watch was started at t = 0s did it take mia and jason to meet? express your answer in terms of know quantities v_0, a_m, and a_j. d) when the stop watch started at time t = 0s, how far apart, d, were mia and jason? express your answer in terms of know quantities v_0, a_m, and a_j.

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?