![laciekersey4568](/avatars/47995.jpg)
laciekersey4568
05.11.2019 •
Engineering
How long does it take electrons to get from a car battery to the starting motor? assume the current is 300 a and the electrons travel through a copper wire with cross-sectional area 0.21 cm2 and length 0.85 m.the number of charge carriers per unit volume is 8.49 1028 m3.
Solved
Show answers
More tips
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- H Health and Medicine Headache: A Comprehensive Guide to Treatment...
- C Computers and Internet How to Properly Order Clothing from International Online Stores...
- A Auto and Moto Mastering One-Movement Parking: All You Need to Know...
- D Dating, Love, Relationships How Long Can Love Last?...
- S Society and Politics Is It Fact or Fiction? Let s Talk About Anton Chekhov s Pseudonym...
- F Food and Cooking How to Find Your Zip Code?...
- S Style and Beauty How to choose the best mascara for your eyelashes...
- S Style and Beauty How to Apply Foundation Correctly?...
- S Sport How to Choose Tennis Rackets?...
Answers on questions: Engineering
- S Social Studies Which choice best reflects why some people consistently make bad investments?...
- H History I want to see how you look in real life just wondering I will show me after you...
- M Mathematics How can you tell which number will be the Y intercept...
- M Mathematics Oceanside Bike Rental Shop charges $14 plus $7 per hour to rent a bike. Joan paid $70 to rent a bike. How many hours did she rent the bike?...
- A Advanced Placement (AP) These please how do I answer these questions .....
- M Mathematics Wite the equation of the linear relationship in slope-intercept form. 0 10 20 30 40 50 60 70 80 Help me plzz...
- C Computers and Technology Select the statements that identify benefits of programming design. Choose all that apply....
- M Mathematics REAL ANSWERS ONLY! Topic: Systems of linear inequalities in standard form Solution set: y = - 2/3 x + 10 y = - 1 3/4 x + 12 1/2 Question: Determine whether a given...
- H History In what way can propaganda influence people?...
- S Social Studies How are all societies organized?...
Ответ:
t=13.49 min
Explanation:
Given that
I=300 A
A= 0.21 cm²
L= 0.85 m
Number of charge carriers per unit volume = 8.49 x 10²⁸ m⁻³.
We know speed of the electron given as
V=J/ne
J= I/A
So
V=I/neA
V=0.00105 m/s
lets take t is the time when electron travels from car battery to the starting motor
t = L/V
t=809.52 s
t=13.49 min
Ответ:
Did you make sure you did it and your notifications are on