![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 23:30
Aquarterback pedals 3.3meters southward and then run 5.7meters northward. whats the distance ? and whats the displacement?
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 07:10
Search coils and credit cards. one practical way to measure magnetic field strength uses a small, closely wound coil called a search coil. the coil is initially held with its plane perpendicular to a magnetic field. the coil is then either quickly rotated a quarter-turn about a diameter or quickly pulled out of the field. (a) derive the equation relating the total charge q that flows through a search coil to the magnetic-field magnitude b. the search coil has n turns, each with area a, and the flux through the coil is decreased from its initial maximum value to zero in a time ât. the resistance of the coil is r, and the total charge is q = iât, where i is the average current induced by the change in flux. (b) in a credit card reader, the magnetic strip on the back of a credit card is rapidly âswipedâ past a coil within the reader. explain, using the same ideas that underlie the operation of a search coil, how the reader can decode the information stored in the pattern of magnetization on the strip. (c) is it necessary that the credit card be âswipedâ through the reader at exactly the right speed? why or why not?
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 15:30
Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 16:30
Which magnetic property best describes a magnetâs ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.
Answers: 1
You know the right answer?
During an experiment., a scientist should always be...
Questions
![question](/tpl/images/cats/biologiya.png)
Biology, 21.05.2020 04:10
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.05.2020 04:10
![question](/tpl/images/cats/mat.png)
Mathematics, 21.05.2020 04:10
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/fizika.png)
Physics, 21.05.2020 04:10
![question](/tpl/images/cats/mat.png)
Mathematics, 21.05.2020 04:10
![question](/tpl/images/cats/fr.png)
French, 21.05.2020 04:10
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.05.2020 04:10
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
English, 21.05.2020 04:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.05.2020 04:10
![question](/tpl/images/cats/mat.png)
Mathematics, 21.05.2020 04:10
![question](/tpl/images/cats/ekonomika.png)
Business, 21.05.2020 04:10
![question](/tpl/images/cats/en.png)
English, 21.05.2020 04:10