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Anastaziya [24]
4 years ago
5

an electrically charged particle with mass m, velocity v, and charge q moves in a circle in magnetic field b. what is the formul

a for the radius of circle r?
Physics
1 answer:
kolbaska11 [484]4 years ago
5 0

Answer:

r=\frac {mv}{qb}

Explanation:

In this case,  since the charged particle moves in circular motion,  the centripetal force is equivalent to the magnetic force.

\frac {mv^{2}}{r}=qvb\\\frac {mv}{r}=qb\\r=\frac {mv}{qb}

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How many excess electrons must be distributed uniformly within the volume of an isolated plastic sphere 25.0 cm in diameter to p
katrin [286]

Answer:

Required charge q=2.6\times 10^{9}C.

n=1.622\times 10^{10}\ electrons

Explanation:

Given:

Diameter of the isolated plastic sphere = 25.0 cm

Magnitude of the Electric field = 1500 N/C

now

Electric field (E) is given as:

E =\frac{kq}{r^2}

where,

k = coulomb's constant = 9 × 10⁹ N

q = required charge

r = distance of the point from the charge where electric field is being measured

The value of r at the just outside of the sphere = \frac{25.0}{2}=12.5cm=0.125m

thus, according to the given data

1500N/C=\frac{9\times 10^{9}N\times q}{(0.125m)^2}

or

q=\frac{0.125^2\times 1500}{9\times 10^{9}}

or

Required charge q=2.6\times 10^{9}C.

Now,

the number of electrons (n) required will be

n=\frac{required\ charge}{charge\ of\ electron}

or

n=\frac{2.6\times 10^{-9}}{1.602\times 10^{-19}}

or

n=1.622\times 10^{10}\ electrons

6 0
4 years ago
What type of OS is very fast and small, and is often embedded, or built into the circuitry of a device?
Bezzdna [24]

Answer:

Real time operating system (RTOS)

Explanation:

  • Real time operating system is an operating system software which is used for the real-time applications that processes the data as soon as the input comes to the system.

It is very fast because it processes the data without any buffer delays.

  • In RTOS the scheduler provides a deterministic time which is predicted for the execution pattern. In a real-time operation the system must respond to each sequence of execution within a certain time frame which is the deadline for the operation so that the next inline process can be executed. Hence it is used in embedded systems and circuitry devices.
7 0
3 years ago
I WILL MARK BRAINLIEST IF CORRECT!!!
Akimi4 [234]

Answer:

I'm fairly sure that the answer is "100 m/s"

Explanation:

Fnet=ma

a=Fnet/m

a=4 N / 0.040 kg

a=100 m/s

please check my work before you submit, i don't wanna let cha down :)

5 0
3 years ago
Gene therapy is a form of <br> .
Elenna [48]
The answer is genetic engineering
6 0
3 years ago
Read 2 more answers
The capacity of a storage battery, such as those used in automobile electrical systems, is rated in ampere-hours (A?h). A 50 A?h
V125BC [204]

Answer: (A) 780J

(B) 1.89×10^-11L

(C)1.67×10^-4 h

Explanation:

Energy of the battery = IVt

=13×60 = 780J

Heat combustion of

1g of gasoline relax 46000J

Therefore 780J will release 780/46000

= 0.017g

Density = mass/volume

Volume = mass/density

Volume =0.017× 10^-3 / 900

= 1.89× 10^-8 m3

= 1.89×10^-11 litres

P=IVt

t=P/IV

= 450/60×13

1.67×10^-4 hours

5 0
3 years ago
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