Physics, 26.04.2021 01:00 niquermonroeee
A car sounds its horn while approaching an observer at 20 m/s. If the observer hears a frequency of 430 Hz, find the frequency emitted by the car's horn. Assume the speed of sound is 343 m/s.
Answers: 2
Physics, 22.06.2019 07:20
Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?
Answers: 3
Physics, 22.06.2019 12:40
Afrequency generator sends a 550 hz sound wave through both water and ice. what is the difference in wavelength between the wave produced in ice and the wave produced in water?
Answers: 3
Physics, 22.06.2019 15:10
When electrons are added to the outermost shell of a carbon atom, it forms--an anion that has a larger anion that has a smaller cation that has a larger cation that has a smaller radius.
Answers: 3
A car sounds its horn while approaching an observer at 20 m/s. If the observer hears a frequency of...
English, 10.11.2020 14:00
Mathematics, 10.11.2020 14:00
Chemistry, 10.11.2020 14:00
Business, 10.11.2020 14:00
English, 10.11.2020 14:00
Arts, 10.11.2020 14:00
Mathematics, 10.11.2020 14:00