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andreyandreev [35.5K]
2 years ago
6

What voltage is required to move 6A through 20?​

Physics
1 answer:
Marina CMI [18]2 years ago
7 0

Answer:

120V

Explanation:

Given parameters:

Current  = 6A

Resistance  = 20Ω

Unknown:

Voltage = ?

Solution:

According to ohms law;

           V = IR

Where V is the voltage

            I is the current

            R is the resistance

Now, insert the parameters and solve;

    V  = 6 x 20  = 120V

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Medical cyclotrons need efficient sources of protons to inject into their center. In one kind of ion source, hydrogen atoms (i.e
Arlecino [84]

Answer:

The radius is r =  4.434 *10^{-5} \ m

Explanation:

From the question we are told that

    The magnetic field is  B =   90 mT =  90*10^{-3} \ T

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   \frac{mv^2}{r}  =  qvB

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Where  m is the mass of electron with values m  =  9.1 *10^{-31} \ kg  

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                v  = \sqrt{\frac{2 * KE}{m} }

So  

       r =  \frac{m}{qB}  *  \sqrt{\frac{2 *  KE}{m} }

     apply indices

    r = \frac{\sqrt{2 * KE * m} }{qB}

substituting values

   

        r = \frac{\sqrt{2 * 2.24*10^{-19}* 9.1 *10^{-31}} }{ 1.60 *10^{-19}* 90*10^{-3}}

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6 0
1 year ago
Which points are most efficient for the utilization of resources on a production possibilities diagram?
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3 0
1 year ago
Consider a long, closely wound solenoid with 10,000 turns per meter. What current, in amperes, is needed in the solenoid to prod
Makovka662 [10]

Answer:

0.4344A

Explanation:

From Ampere's law, it can be shown that the magnetic field B inside a long solenoid is

B= \mu_0NI

Where

B= Magnetic field strenght at distance d

I= current

\mu_0 =Permeability of free space (4\pi*10^{-7} Tm/A)

N= Number of loops

Our values are defined as follow,

N=10000

B=5.25*10^{-5}T

B'=5.25*10^{-5} * 104 = 5.46*10^{-3}T

As a current required to become 104 times the Earth's magnetic field is required, we use B '

B'= \mu_0NI

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4 0
1 year ago
Ferns that eject spores generally do so in pairs, with two spores flying off in opposite directions. The structure from which th
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Answer:

It cancels recoil.

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For each action there is an equal an opposite reaction.

The principle of conservation of momentum tell us that if a single spore were ejected the fern would suffer a recoil from it. This recoil would take energy and speed from the spore. But if they are ejected in pairs the recoil is canceled and all the energy is transferred to the spores resulting in higher speeds.

5 0
2 years ago
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