![subject](/tpl/images/cats/fizika.png)
Physics, 28.01.2020 23:41 ciaotaylor
What is the distance between the motion sensor and the object?
the motion sensor acts as a transmitter, when it sends out pulses, and as a receiver, when it listens for echoes. the delay t between sending a pulse and receiving the echo is equal to 8.8 ms (=0.0088 s). the air temperature id 20 degrees celsius.
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 09:10
Which lists the organs in the correct order as food passes from the mouth to anus?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 14:00
Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 14:30
Exercise 2. find the wavelength of a photon emitted when an electron jumps from the n = 3 energy level down to the n = 2 energy level. where is this photon in the electromagnetic spectrum?
Answers: 3
![question](/tpl/images/cats/fizika.png)
You know the right answer?
What is the distance between the motion sensor and the object?
the motion sensor acts as a tr...
the motion sensor acts as a tr...
Questions
![question](/tpl/images/cats/istoriya.png)
History, 28.06.2019 13:50
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.06.2019 13:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.06.2019 13:50
![question](/tpl/images/cats/mat.png)
Mathematics, 28.06.2019 13:50
![question](/tpl/images/cats/istoriya.png)
History, 28.06.2019 13:50
![question](/tpl/images/cats/biologiya.png)
Biology, 28.06.2019 13:50
![question](/tpl/images/cats/mat.png)
Mathematics, 28.06.2019 13:50
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/istoriya.png)