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MatroZZZ [7]
3 years ago
9

A driver speeds along a curved road and sees a fallen tree on the road. He applies the brakes but is unable to stop in time. Whe

n the car hits the tree, it slows down from 6 meters/second to 0 meters/second. What was the change in velocity during this time?
The change in velocity during the collision was _____ meters/second. need it fast
Physics
2 answers:
11111nata11111 [884]3 years ago
8 0

The change in velocity is the difference of the final velocity and the initial velocity:

0 – 6 = -6 m/s.

Lelu [443]3 years ago
7 0
It's -6 meters/seconds.
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¿cual es la velocidad de un haz de electrones que marchan sin desviarse cuando pasan a traves de un campo magnetico perpendicula
Elina [12.6K]

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:

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F = |q|vBsin(\theta)     (1)

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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            

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

Espero que te sea de utilidad!                                        

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D: 0.239

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