Physics, 09.10.2019 19:50 DarlingtonQueen

Abeam of electrons moves at right angles to a magnetic field of 4.5 × 10-2 tesla. if the electrons have a velocity of 6.5 × 106 meters/second, what is the force acting on the electrons? the value of q = -1.6 × 10-19 coulombs.
(a)-2.9 × 106 n
(b)-3.9 × 10-14 n
(c)-4.9 × 10-14 n
(d)-6.5 × 10-13 n

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Hello!

F = Bqv sin theta F=Force B=magnetic flux density q=charge v=velocity theta=angle the moving electrons make with the magnetic field.

^^^You will find the force using that formula^^^

In Short, your Answer would MOST LIKELY have to be "B".

"-3.9 × 10-14 N"

I Hope my answer has come to your Help. Thank you for posting your question here in . We hope to answer more of your questions and inquiries soon. Have a nice day ahead! :)

Answer from: destineenikole17

Explanation :

It is given that,

Magnetic field, $B=4.5\times 10^{-2}\ T$

Velocity of electrons, $v=6.5\times 10^6\ m/s$

Charge, $q=-1.6\times 10^{-19}\ C$

Magnetic force $F=q(v\times B)$

$F=-1.6\times 10^{-19}\ C\times 6.5\times 10^6\ m/s\times 4.5\times 10^{-2}\ T$

so, $F=-4.68\times 10^{-14}\ N$

So, approximately answer can be option (b) " $-3.9\times 10^{-14}\ N$ "

Hence, this is the required solution.

Answer from: Quest

most voltage drop calculators want the distance between the source and destination. then internally, they double it so both the source and return wires are calculated. but you need to know which distance the calculator uses so you're not half of what you should be or double what you should be.

most circuit breakers will not take a #6 directly, so the electrician will have to splice on a smaller pigtail. you also have to upsize the grounding wire when you upsized the ungrounded (hot) wire (see note in 250.122). this will preclude using most cable assemblies, as a cable with #6 copper will most likely only have a #10 grounding conductor. you need a #6 grounding conductor if the circuit is 20a. a #8 cable is no better, as it will have a #10 grounding conductor too. but most 20a breakers will take a #8 directly.

in your related post, you didn't say what type of load this is. if it is a light or heater, voltage drop won't be a big issue. if this is a motor, the current needs are huge at startup and the voltage drop can pose a problem. if this is a motor, knowing if the motor is under much load during startup will answer the voltage drop effect (a saw is easier to start than a compressor).

Answer from: Quest

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.

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Abeam of electrons moves at right angles to a magnetic field of 4.5 × 10-2 tesla. if the electrons h...

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