Two trains on separate tracks move toward one another. Train 1 has a speed of 100 km/h, train 2 a speed of 55.0 km/h. Train 2 blows its horn, emitting a frequency of 500 Hz. What is the frequency heard by the engineer on train 1? (Assume the speed of sound is 345 m/s.)

Two eagles fly directly toward one another, the first at 15.0 m/s and the second at 26.0 m/s. Both screech, the first one emitting a frequency of 3300 Hz and the second one emitting a frequency of 3800 Hz. What frequencies (in Hz) do they receive if the speed of sound is 330 m/s? first eagle Hz second eagle Hz

1. A person holds a rifle horizontally and fires at a target. The bullet has a muzzle speed of 180 m/s, and the person hears the bullet strike the target 1.20 s after firing it. The air temperature is 81°F. What is the distance to the target? m

A bungee jumper jumps from rest and screams with a frequency of 403 Hz. The air temperature is 20 °C. What is the frequency heard by the people on the ground below when she has fallen a distance of 14.3 m? Assume that the bungee cord has not yet taken effect, so she is in free-fall. Number Units

A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a frequency of 5.89 104 Hz, and if the speed of sound in air is 343 m/s, what is the smallest insect a bat can detect?mm

Please have answers computer typed.

A convertible moves toward you and then passes you; all the while, its loudspeakers are producing a sound. The speed of the car is a constant 8.93 m/s, and the speed of sound is 342 m/s. What is the ratio of the frequency you hear while the car is approaching to the frequency you hear while the car is moving away? Number Units > #3 C E m/s 7 8 5 % JU 6 וום & e t y u Apr 30 5 6 0

Two trains on separate tracks move toward one another. Train 1 has a speed of 120 km/h, train 2 a speed of 65.0 km/h. Train 2 blows its horn, emitting a frequency of 500 Hz. What is the frequency heard by the engineer on train 1? (Assume the speed of sound is 345 m/s.) Hz

The lower limit of the human singing voice is 65 Hz. What is the wavelength of this frequency in 20 °C air? 5.3 m 2.2 x 104 m 65 m 0.20 m

Sound intensity D (decibels) is measured relative to the lowest human–detectable sound I0 = 10–12 W m–2. D = 10 log (I/I0)  What is the relative intensity from a jet with I = 9.5 × 102 W m–2 ?   D = 95   D = 150   D = 15