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ollegr [7]
3 years ago
7

¿cual es la velocidad de un haz de electrones que marchan sin desviarse cuando pasan a traves de un campo magnetico perpendicula

rescon magnitudes de 3500007 y de fuerza de 100 n.
Physics
1 answer:
Elina [12.6K]3 years ago
7 0

Answer:

La velocidad del haz de electrones es 1.78x10⁵ m/s. Este valor se obtuvo asumiendo que el campo magnético dado (3500007) estaba en tesla y que la fuerza venía dada en nN.

Explanation:

Podemos encontrar la velocidad del haz de electrones usando la Ley de Lorentz:

F = |q|vBsin(\theta)     (1)

En donde:

F: es la fuerza magnética = 100 nN

q: es el módulo de la carga del electron = 1.6x10⁻¹⁹ C

v: es la velocidad del haz de electrones =?

B: es el campo magnético = 3500007 T

θ: es el ángulo entre el vector velocidad y el campo magnético = 90°

Introduciendo los valores en la ecuación (1) y resolviendo para "v" tenemos:

v = \frac{F}{qBsin(\theta)} = \frac{100 \cdot 10^{-9} N}{1.6 \cdot 10^{-19} C*3500007 T*sin(90)} = 1.78 \cdot 10^{5} m/s            

Este valor se calculó asumiendo que el campo magnético está dado en tesla (no tiene unidades en el enunciado). De igual manera se asumió que la fuerza indicada viene dada en nN.

Entonces, la velocidad del haz de electrones es 1.78x10⁵ m/s.  

Espero que te sea de utilidad!                                        

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Stolb23 [73]

Answer:

Gravity and

Air resistance

Explanation:

The two forces acting on a skydiver are gravitational force and air resistance.

Gravitational force is a force that tends to pull all massive bodies towards the center of the earth. It works on all bodies that has mass. The larger or bigger the mass, the more the pull of gravity on the body.

Air resistance is the drag of air on a body as it passes to it. It is resisting force.

  • When a sky diver jumps out of a plane, he/she encounters both gravity and air resistance.
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4 years ago
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A rock is rolling down a hill, and it’s halfway down. Would it have both Kintectic engery and Potenial engery? PLEASE HELP
dimaraw [331]

Answer:

Only kinetic.

Explanation:

Potential energy means it has the potential to move. Not something already in motion.

6 0
4 years ago
A ball of mass 0.5kg is thrown at a man of mass 59.5kg standing on roller skates, at a speed of 5 m/s. It is stopped by the man.
Akimi4 [234]

The final velocity of the man standing on roller skates with the ball caught, after it is thrown at him at a speed of 5 m/s, is 0.042 m/s.                        

 

The velocity of the man with the ball can be calculated by conservation of linear momentum:

p_{i} = p_{f}

m_{b}v_{b_{i}} + m_{m}v_{m_{i}} = m_{b}v_{b_{f}} + m_{m}v_{m_{f}}

Where:

m_{b}: is the mass of the ball = 0.5 kg

m_{m}: is the <u>mass</u> of the man = 59.5 kg

v_{b_{i}}: is the initial velocity of the <u>ball</u> = 5 m/s

v_{m_{i}}: is the <u>initial velocity</u> if the <u>man</u> = 0 (he is standing still)

v_{b_{f}}: is the final velocity of the <u>ball</u> =?

v_{m_{f}}: is the <u>final velocity</u> of the <u>man</u> =?

Since the man catches the ball, his final velocity is the same that the final ball's velocity, so:

m_{b}v_{b_{i}} + m_{m}v_{m_{i}} = v_{f}(m_{b} + m_{m})

v_{f} = \frac{m_{b}v_{b_{i}} + m_{m}v_{m_{i}}}{m_{b} + m_{m}} = \frac{0.5 kg*5 m/s + 0}{0.5 kg + 59.5 kg} = 0.042 m/s

Therefore, the velocity of the man with the ball is 0.042 m/s.

Learn more about the conservation of linear momentum here:  

  • brainly.com/question/2141713?referrer=searchResults
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I hope it helps you!  

4 0
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Answer:

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Mass of the person, m = 93.3 kg

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The reading of the scale.

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As the elevator is moving down with some acceleration. The net force acting on it is given by :

F_N=ma+mg

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