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igor_vitrenko [27]
3 years ago
14

A sphere has a radius of 18 cm. what is the approximate volume of the sphere​

Mathematics
1 answer:
dolphi86 [110]3 years ago
6 0

Answer:V≈24429.02cm³

Step-by-step explanation: hope this helps :)

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Determine the commutators of the operators a and a+,where a = (x + ip)/2 ^1/2 and a+ = (x - ip)/ 2 ^1/2
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Answer:

Given that:

a = (\frac{x+ip}{2})^{\frac{1}{2}} and a+= (\frac{x-ip}{2})^{\frac{1}{2}}

if a , a+ commutator, it obeys aa^+ = a^+a

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aa^+ = (\frac{x+ip}{2})^{\frac{1}{2}} (\frac{x-ip}{2})^{\frac{1}{2}}

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