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Tresset [83]
3 years ago
6

An electron travels 1.49 m in 7.4 µs (microsecWhat is its speed if 1 inch = 0.0254 m? Answer in units of in/min.

Physics
1 answer:
mezya [45]3 years ago
7 0

Explanation:

Write what you know

Speed = Distance / Time

micro- = 10^-6

write your conversions as fractions

1 in / 0.0254 m

1 min / 60 sec

First convert time to regular seconds

7.4 x 10^-6 seconds

Use Velocity

1.49m / (7.4 x 10^-6) s

We've written our conversions in fractions because units cancel out just like numbers

\frac{1.49m}{7.4 \times {10}^{ - 6} }  \times  \frac{1in}{0.0254m}  \times  \frac{60sec}{1min}

Multiply all the fractions accross and youll have your answer

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Answer:

a= - 6.667 m/s²

Explanation:

Given that

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Lets take the acceleration of the box = a

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Now by putting the values in the above equation we get

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Negative sign indicates that velocity and acceleration are in opposite direction.

Therefore the acceleration of the box will be  - 6.667 m/s² .

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3 years ago
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