Answers: 3
Physics, 23.06.2019 02:30
Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?
Answers: 1
Physics, 23.06.2019 06:30
Acopper sheet has a volume of 100 cmÂł. if the density of copper is 8.9 g/cmÂł, what is the mass of the sheet? a. 11 g b. 8.9 g c. 189 g d. 890 g
Answers: 1
Physics, 23.06.2019 11:30
1. do the particles in the medium material move in the same direction of the wave or at opposite direction to the wave? explain your answer. 2. by inputting more energy into the wave, i.e a large shake of the spring, which wave property also increases? 3. are there forces of friction acting while a wave is passing through a medium?
Answers: 3
A planet has a mass 0f 5.97x10...
Mathematics, 02.12.2020 06:00
Mathematics, 02.12.2020 06:00
Chemistry, 02.12.2020 06:00
English, 02.12.2020 06:00
Mathematics, 02.12.2020 06:00
Mathematics, 02.12.2020 06:00
Mathematics, 02.12.2020 06:00
Mathematics, 02.12.2020 06:00
Mathematics, 02.12.2020 06:00
Mathematics, 02.12.2020 06:00
Mathematics, 02.12.2020 06:00