Physics, 25.12.2019 02:31 dontcareanyonemo
On a bright winter's day, a student notices an echo as she runs between a high school's playing field and the rear wall of its gym. she decides to estimate how far she stands from the reflective wall. she abruptly whistles and determines that the sound pulse returns to her as an echo 0.431 seconds later (averaging several trials for enhanced reliability). the air is a frigid -10°c. six months later, the student decides to repeat her experiment on a hot summer day, standing at the same exact spot. this time, the echo takes a slightly shorter 0.396 seconds to return to the student. (a) what is the temperature (in °c) of the air on the summer day? oc (b) how far (in m) does the student stand from the reflective walir?
Answers: 3
Physics, 22.06.2019 01:00
4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that
Answers: 1
Physics, 22.06.2019 05:10
A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm
Answers: 2
Physics, 22.06.2019 10:30
If y gets smaller as x gets bigger and y have an relationship?
Answers: 1
On a bright winter's day, a student notices an echo as she runs between a high school's playing fiel...
History, 01.07.2019 05:50
History, 01.07.2019 05:50
Biology, 01.07.2019 05:50
Social Studies, 01.07.2019 05:50
Geography, 01.07.2019 06:00
Mathematics, 01.07.2019 06:00
Mathematics, 01.07.2019 06:00
Business, 01.07.2019 06:00
History, 01.07.2019 06:00
History, 01.07.2019 06:00
History, 01.07.2019 06:00
Mathematics, 01.07.2019 06:00
Biology, 01.07.2019 06:00