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pishuonlain [190]
3 years ago
10

Heavy ions, such as alpha particles, lose kinetic energy as they travel through matter. Consider equation 31.1 or 31.2. Where do

heavy ion lose more kinetic energy?
a. The rate at which they lose energy does not depend on the speed of the ion.
b. When they are traveling at high speeds, just at they enter a medium
c. When they are traveling at low speeds, when they are almost stopped
Physics
1 answer:
umka21 [38]3 years ago
3 0

Answer:

c. When they are traveling at low speeds, when they are almost stopped

Explanation:

The rate at which they ions loose energy depends upon its charge and mass and not on its speed. For example, We know that alpha particles have high mass and high charge so they loose more energy than gamma radiation which has no mass and no charge. The slower heavy particle which has high linear energy transfer.

Hence, when they travel at low speed they are almost stopped.

There the correct answer is option C

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The average speed during any time interval is equal to the total distance of travel divided by the total time. Let d represent t
Tanya [424]

Answer:

Average speed = 3.63 m/s

Explanation:

The average speed during any time interval is equal to the total distance travelled divided by the total time.

That is,

Average speed = distance/ time

Let d represent the distance between A and B.

Let t1 be the time for which she has the higher speed of 5.15 m/s. Therefore,

5.15 = d/t1.

Make d the subject of formula

d = 5.15t1

Let t2 represent the longer time for the return trip at 2.80 m/s . That is,

2.80 = d/t2.

Then the times are t1 = d/5.15 5 and

t2 = d/2.80.

The average speed vavg is given by the following equation.

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Avg speed = d + d/t1 + t2

Where

Total distance = 2d

Total time = t1 + t2

Total time = d/5.15 + d/2.80

Total time = (2.8d + 5.15d)/14.42

Total time = 7.95d/14.42

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Avg speed = 2d / 0.55d

Avg Speed = 3.63 m/s

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Answer:

The unit is the barn, which is equal to 10-28 m^2 or 10-24 cm^2

Explanation:

The standard unit for measuring a nuclear cross section (denoted as σ)

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Answer:

The answer is B. :)

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