Physics, 28.06.2019 01:00 rleiphart1
Atrain is approaching a signal tower at a speed of 40m/s. the train engineer sounds the 1000-hz whistle, while a switchman in the tower responds by sounding 1200-hz siren. the air still and the speed is 340m/s. what is the frequency of the train whistle tone that is heard by the switchman? 300/340x1000hz 380/340x1000hz 340/300x1000hz 1000hz 340/380x1000hz
Answers: 1
Physics, 22.06.2019 01:20
An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0Ā° above the horizontal. it then moves 137 ft at an angle of 48.0Ā° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)
Answers: 1
Physics, 22.06.2019 09:30
Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.
Answers: 1
Physics, 22.06.2019 18:00
Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above
Answers: 1
Atrain is approaching a signal tower at a speed of 40m/s. the train engineer sounds the 1000-hz whis...
English, 23.04.2021 08:40
Biology, 23.04.2021 08:40
Mathematics, 23.04.2021 08:40
English, 23.04.2021 08:40
Arts, 23.04.2021 08:40
Mathematics, 23.04.2021 08:40
Mathematics, 23.04.2021 08:40
Mathematics, 23.04.2021 08:40
Mathematics, 23.04.2021 08:40
Mathematics, 23.04.2021 08:40
Biology, 23.04.2021 08:40
Mathematics, 23.04.2021 08:40
Biology, 23.04.2021 08:40
Mathematics, 23.04.2021 08:40