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3 years ago

6

Nina can ride her bike 63,000 feet in 3,400 seconds, and Sophia can ride her bike 10 miles in 1 hour. What is Nina’s rate in mil

es per hour if there are 5,2080 feet in a mile?

1 answer:

miss Akunina [59]3 years ago

4 0

Answer:

Step-by-step explanation:

u need to multiply.

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Electrons execute 1.4*10^6 revolutions per sec in a magnetic field of flux density

seropon [69]

The charge of the electrons is $8.02 \times 10^{-19} \ C$ .

The given parameters:

<em>Number of revolution of the electron, N = 1.4 x 10⁶ rev per sec</em>
<em>Flux density, B = 10⁻⁵ T</em>
<em>Mass of electron, m = 9.11 x 10⁻³¹ kg</em>

<em />

The angular speed of the electron is calculated as follows;

$\omega = 2\pi N\\\\\omega = 2\pi \ \frac{rad}{1 \ rev} \times 1.4 \times 10^6 \ rev/s\\\\\omega = 8.798 \times 10^6 \ rad/s$

The charge of the electrons is calculated as follows;

$F_c= m\omega ^2 r\\\\F_{B}= qvB = q\omega r B \\\\F_c = F_B\\\\m\omega ^2 r = q\omega r B \\\\q = \frac{m\omega ^2 r}{\omega r B} \\\\q = \frac{m \omega }{B} \\\\q = \frac{9.11 \times 10^{-31} \times 8.798 \times 10^6}{10^{-5}} \\\\q = 8.02 \times 10^{-19} \ C$

The charge of the electrons is $8.02 \times 10^{-19} \ C$ .

The complete question here:

Electrons execute 1.4*10^6 revolutions per sec in a magnetic field of flux density 10⁻⁵ T. What will be the value of charge of the electron?

Learn more about magnetic force of electrons here: brainly.com/question/3990732

8 0

2 years ago

Kelly is a sales associate for All About Sports T-shirt Shop. Her job is to travel to various retail stores and sell them their

DochEvi [55]

Hi, did you get the answer yet?

3 0

3 years ago

Reflect shape A in the line x = -2

choli [55]

Answer:

(-2,-1); (-2,-4); (0,-1); (0,-3); (-1,-4); (-1,-3)

Step-by-step explanation:

Just reflect it starting at x=-2

7 0

3 years ago

you had eight hours until you have to be on set if you will spend 3/4 of an hour driving to the TV station how much time does th

Inessa05 [86]

Answer:

7 hours and 15 minutes

Step-by-step explanation:

8 - 3/4 = 7 1/4 hours

7 0

3 years ago

Given that f(x) = 2x + 5 and g(x) = x − 7, solve for f(g(x)) when x = −3

dusya [7]

Answer:

-15

Step-by-step explanation:

start from the inside and go out.

So first plug in -3 into g(x)

g(-3) = -3 - 7 = -10

then plug in -10 into f(x)

f(-10) = 2(-10) + 5 = -15

so f(g(x)) = -15

5 0

3 years ago

Read 2 more answers