![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Physics
![image](/tpl/images/cats/fizika.png)
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 12:20, zenaidazurita1p6bs1d
Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?
Answers: 2
![image](/tpl/images/cats/fizika.png)
![image](/tpl/images/cats/fizika.png)
Physics, 23.06.2019 02:30, Braxtonw875
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
You know the right answer?
Explain what is meant by red - shifted...
Questions in other subjects:
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 28.11.2019 18:31
![Konu](/tpl/images/cats/en.png)
English, 28.11.2019 18:31
![Konu](/tpl/images/cats/obshestvoznanie.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 28.11.2019 18:31
![Konu](/tpl/images/cats/mat.png)
Mathematics, 28.11.2019 18:31
![Konu](/tpl/images/cats/biologiya.png)
Biology, 28.11.2019 18:31
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 28.11.2019 18:31