Black sphere's radius and temperature both changed: new rate of radiation

1. A.
   64 E
2. B.
   32 E
3. C.
   16E
4. D.
   8 E

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1. A.
   $E$
2. B.
   $3E$
3. C.
   $6E$
4. D.
   $9E$

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1. A.
   4 P
2. B.
   8 P
3. C.
   16 P
4. D.
   64 P

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1. A.
   $\frac{3E}{2}$
2. B.
   $\frac{27E}{8}$
3. C.
   $\frac{81E}{4}$
4. D.
   $\frac{9E}{4}$

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