Kundt’s method for measuring the speed of sound . In Fig. 17-51. a rod R is clamped at its center; a disk D at its end projects into a glass tube that has cork filings spread over its interior. Aplunger P is provided at the other end of the tube, and the tube is filled with a gas. The rod is made to oscillate longitudinally at frequency f to produce sound waves inside the gas, and the location of the plunger is adjusted until a standing sound wave pattern is set up inside the tube. Once the standing wave is set up, the motion of the gas molecules causes the cork filings to collect in a pattern of ridges at the displacement nodes. If f = 4.46 × 10 3 Hz and the separation between ridges is 9.20 cm, what is the speed of sound in the gas? Figure 17-51 Problem 107.
Kundt’s method for measuring the speed of sound . In Fig. 17-51. a rod R is clamped at its center; a disk D at its end projects into a glass tube that has cork filings spread over its interior. Aplunger P is provided at the other end of the tube, and the tube is filled with a gas. The rod is made to oscillate longitudinally at frequency f to produce sound waves inside the gas, and the location of the plunger is adjusted until a standing sound wave pattern is set up inside the tube. Once the standing wave is set up, the motion of the gas molecules causes the cork filings to collect in a pattern of ridges at the displacement nodes. If f = 4.46 × 10 3 Hz and the separation between ridges is 9.20 cm, what is the speed of sound in the gas? Figure 17-51 Problem 107.
Kundt’s method for measuring the speed of sound. In Fig. 17-51. a rod R is clamped at its center; a disk D at its end projects into a glass tube that has cork filings spread over its interior. Aplunger P is provided at the other end of the tube, and the tube is filled with a gas. The rod is made to oscillate longitudinally at frequency f to produce sound waves inside the gas, and the location of the plunger is adjusted until a standing sound wave pattern is set up inside the tube. Once the standing wave is set up, the motion of the gas molecules causes the cork filings to collect in a pattern of ridges at the displacement nodes. If f = 4.46 × 103 Hz and the separation between ridges is 9.20 cm, what is the speed of sound in the gas?
The force of the quadriceps (Fq) and force of the patellar tendon (Fp) is identical (i.e., 1000 N each). In the figure below angle in blue is Θ and the in green is half Θ (i.e., Θ/2). A) Calculate the patellar reaction force (i.e., R resultant vector is the sum of the horizontal component of the quadriceps and patellar tendon force) at the following joint angles: you need to provide a diagram showing the vector and its components for each part. a1) Θ = 160 degrees, a2) Θ = 90 degrees. NOTE: USE ONLY TRIGNOMETRIC FUNCTIONS (SIN/TAN/COS, NO LAW OF COSINES, NO COMPLICATED ALGEBRAIC EQUATIONS OR ANYTHING ELSE, ETC. Question A has 2 parts!
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