The radius of a star is 6.95 × 108 m, and its rate of radiation has been measured to be 5.32 × 1026 W

Assuming that it is a perfect emitter, what is the temperature of the surface of this star? (? = 5.67 × 10-8 W/m2 ? K4 )
A) 6.27 × 103 K
B) 8.25 × 103 K
C) 8.87 × 103 K
D) 3.93 × 107 K
E) 5.78 × 107 K


A

Physics & Space Science

You might also like to view...

Solenoid #1 has 100 turns and is 10.0 cm long. Solenoid #2 has 200 turns and is 20.0 cm long. If a current of 0.50 A is carried by #1, what current must #2 carry so that it would produce a magnetic field at its center equal to that in #1?

1.0.25 A 2.0.50 A 3.1.00 A 4.4.00 A

Physics & Space Science

A wooden raft has a mass of 55 kg. When empty it floats in water (density with 64% of its volume submerged. What maximum mass of sand can be put on the raft without sinking it?

What will be an ideal response?

Physics & Space Science

If luminosity depends on radius and temperature, what does flux depend on? _______________

Fill in the blank(s) with correct word

Physics & Space Science

Is it feasible to construct an air-filled parallel-plate capacitor that has its two plates separated by 0.10 mm and has a capacitance of 1.0 F? Why or why not?

Physics & Space Science