1) A completely black metal sphere with a radius of 10.0 cm is heated to 201°C. What is the total power of the electromagnetic waves emitted by the sphere?
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1)
A completely black metal sphere with a radius of 10.0 cm is heated to 201°C.
What is the total power of the
2)
Wavelength light 470 m passes through a double slot. The figure
Interference is observed on a screen located 5.60 m from the slots. The fringes
Bright are spaced to 9.00 mm. What is the separation of the two slots? Give
The answer in mm.
Question 1 and 2 please.
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