Figure 17-32 shows the output from a pressure monitor mounted at a point along the path taken by a sound wave of a single frequency traveling at 343 m/s through air with a uniform density of 1.21 kg/m 3 . The vertical axis scale is set by ▵ p s = 4.0 mPa. If the displacement function of the wave is s(x, t ) = s m cos (kx − ωt), what are (a) s m , (b) k , and (c) ω ? The air is then cooled so that its density is 1.35 kg/m 3 and the speed of a sound wave through it is 320 m/s. The sound source again emits the sound wave at the same frequency and same pressure amplitude. What now are (d) s m , (e) k , and (f) ω ? Figure 17-32 Problem 14.
Figure 17-32 shows the output from a pressure monitor mounted at a point along the path taken by a sound wave of a single frequency traveling at 343 m/s through air with a uniform density of 1.21 kg/m 3 . The vertical axis scale is set by ▵ p s = 4.0 mPa. If the displacement function of the wave is s(x, t ) = s m cos (kx − ωt), what are (a) s m , (b) k , and (c) ω ? The air is then cooled so that its density is 1.35 kg/m 3 and the speed of a sound wave through it is 320 m/s. The sound source again emits the sound wave at the same frequency and same pressure amplitude. What now are (d) s m , (e) k , and (f) ω ? Figure 17-32 Problem 14.
Figure 17-32 shows the output from a pressure monitor mounted at a point along the path taken by a sound wave of a single frequency traveling at 343 m/s through air with a uniform density of 1.21 kg/m3. The vertical axis scale is set by ▵ps = 4.0 mPa. If the displacement function of the wave is s(x, t) = sm cos(kx − ωt), what are (a) sm, (b) k, and (c) ω? The air is then cooled so that its density is 1.35 kg/m3 and the speed of a sound wave through it is 320 m/s. The sound source again emits the sound wave at the same frequency and same pressure amplitude. What now are (d) sm, (e) k, and (f) ω?
The cylindrical beam of a 12.7-mW laser is 0.920 cm in diameter. What is the rms value of the electric field?
V/m
Consider a rubber rod that has been rubbed with fur to give the rod a net negative charge, and a glass rod that has been rubbed with silk to give it a net positive charge. After being charged by contact by the fur and silk...?
a. Both rods have less mass
b. the rubber rod has more mass and the glass rod has less mass
c. both rods have more mass
d. the masses of both rods are unchanged
e. the rubber rod has less mass and the glass rod has mroe mass
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.