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ValentinkaMS [17]
3 years ago
14

Radon-220 is a radioactive gas. It escapes from underground rocks and causes a large part of the natural background radiation in

the United Kingdom. It has an atomic number of 86. How many neutrons are there in its nucleus?
Physics
1 answer:
Sergeu [11.5K]3 years ago
5 0

Answer: 134 neutrons are there in the nucleus of Radon-220

Explanation:

Atomic number : It is defined as the number of electrons or number of protons present in a neutral atom.

Thus, number of protons = atomic number = 86

Mass number is the number of the entities present in the nucleus which is the equal to the sum of the number of protons and electrons.

Mass number = Number of protons + Number of neutrons

220 = 86 + Number of neutrons

Number of neutrons = 134

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Suppose the coefficient of kinetic friction between mA and the plane in the figure(Figure 1) is μk = 0.15, and that mA=mB=2.7kg.
luda_lava [24]
A ) 
T = mB g + mB a
T + mA a - mA g sin 35° = (Mi) mA g cos 35°
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T = 2.7 · 9.81  + 2.7 a
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4 0
3 years ago
For a particular pipe in a pipe-organ, it has been determined that the frequencies 296 Hz and 370 Hz are two adjacent natural fr
user100 [1]

Answer:

fundamental frequency of pipe will be equal to 74 Hz

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We have given for a particular organ pipe two adjacent frequency are 296 Hz and 370 Hz

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So fundamental frequency = 370 - 296 = 74 Hz

So fundamental frequency of pipe will be equal to 74 Hz

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Scientists are making plans to put a probe in orbit around Earth. They want the probe to enter the orbit shown below.
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An arrow which shows the direction that the probe should be moving in order for it to enter the orbit is X.

<h3>What is an orbit?</h3>

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In this scenario, if the scientists want the probe to enter the orbit they should ensure that probe moves in direction X. This ultimately implies that, the probe must move in the same direction as the orbit, in order to enter it.

Read more on orbit here: brainly.com/question/18496962

#SPJ1

6 0
2 years ago
Read 2 more answers
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