Author Question: By casually glancing at a scene on your TV you are A) affecting the image. B) participating in ... (Read 61 times)

washai · **on:** Jul 29, 2018

By casually glancing at a scene on your TV you are

A) affecting the image.
B) participating in the action on the screen.
C) both of these
D) neither of these

Question 2

How much power does a sphere with a radius of 10 cm radiate if is has an emissivity e = 1.0 and is kept at a temperature of 400 K? The Stefan-Boltzmann constant is 5.67 x 10-8 W/(m2K4).

A) 60 W
B) 70 W
C) 180 W
D) 210 W
E) 360 W