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lions [1.4K]
3 years ago
12

How many neutrons does element X have if it's atomic number is 23 and its mass number is 70​

Physics
1 answer:
Reptile [31]3 years ago
4 0
<h2>Answer:</h2>

<u>The number of neutrons is </u><u>47</u>

<h2>Explanation:</h2>

In order to find the number of neutrons we subtract the atomic number from the atomic mass.

In the given case the atomic number is 23 and mass number is 70 so

No of neutrons is 70 -23 = 47

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object P1 and P2 are in a straight line with the normal to a plane mirror.If P1 and P2 are 18m and 21m away from the mirror. Cal
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The distance between object P1 and its image formed is determined as 36 m.

<h3>Distance of the image</h3>

The distance of the image formed by object P1 is calculated as follows;

In a plane mirror; object distance = image distance

image distance of P1 = 18 m

distance between object and image = 18m + 18 m = 36 m

Thus, the distance between object P1 and its image formed is determined as 36 m.

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2 years ago
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3 years ago
A capacitor is connected to an ac supply. increasing the frequency of the supply _________ the current through the capacitor
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A capacitor is connected to an ac supply. increasing the frequency of the supply increases the current through the capacitor

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2 years ago
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3 years ago
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You throw a ball straight up at 45 m/s. how many seconds elapse before it is traveling downward at 9 m/s?
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In order to change from 45 m/s up to 9 m/s down, the velocity
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So the change takes  (54/9.8)  =  5.5 seconds .
8 0
3 years ago
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