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3 years ago

10

In 2016 there were 2025 reported collisions between trains and cars that’s resulted in 265 fatalities. Explain the change in kin

etic energy as it relates to conservation of momentum

1 answer:

Law Incorporation [45]3 years ago

7 0

Answer B

Explanation:

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Hans Lipperhey

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I drove from Oklahoma to California (1452.9 miles) in 23 hours? What was my average speed?

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63 miles per hour

Explanation:

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An electron is accelrated by a unifor electric field (1000v/m) pointing vertically upward. Use energy methods to get the magnitu

ExtremeBDS [4]

Explanation:

In the given situation two forces are working. These are:

1) Electric force (acting in the downward direction) = qE

2) weight (acting in the downward direction) = mg

Therefore, work done by all the forces = change in kinetic energy

Hence, $qE \times S + mg \times S = 0.5 \times mv^{2}$

$1.6 \times 10^{-19} \times 1000 + 9.1 \times 10^{-31} \times 9.8 \times (\frac{0.10}{100}) = 0.5 \times 9.1 \times 10^{-31} \times v^{2}$

It is known that the weight of electron is far less compared to electric force. Therefore, we can neglect the weight and the above equation will be as follows.

$(1.6 \times 10^{-19} \times 1000) \times (\frac{0.10}{100}) = 0.5 \times 9.1 \times 10^{-31} \times v^{2
}$

v = $sqrt{\frac{1.6 \times 10^{-19}}{(0.5 \times 9.1 \times 10^{-31})}$

= 592999 m/s

Since, the electron is travelling downwards it means that it looses the potential energy.

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3 years ago

A ___ is the unit of measurement for force.

bogdanovich [222]

Answer:

Newton (N)

Explanation:

A newton is the unit of measurement for force

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3 years ago