The total energy radiated by a blackbody depends on:
A) the fourth power of its temperature.
B) the square of its temperature.
C) the square root of its temperature.
D) the cube root of its temperature.
E) the cube of its temperature.
A
You might also like to view...
This image combines a visible-light view of the galaxy Hercules A with an image showing radio wave emission (the reddish colors) in its vicinity. The likely explanation for the two huge clumps of radio emission far to either side of the visible galaxy is
A) the radio emission comes from gas shot out into space by jets powered by a supermassive black hole in the galactic center. B) the radio emission comes from gas that was left behind in the halo when the galaxy collapsed from a protogalactic cloud. C) the radio emission comes from gas pulled out of the galaxy when it collided with another galaxy in the distant past. D) this galaxy must have suffered two collisions in the past, with each collision pulling out gas in one direction.
The acceleration of an object as a function of time is given by a(t) = (3.00 m/s3)t, where t is in seconds. If the object is at rest at time t = 0.00 s, what is the velocity of the object at time t = 6.00 s?
A) 108 m/s B) 18.0 m/s C) 15.0 m/s D) 54.0 m/s E) 0.00 m/s
A pilot punches the throttle lever forward, changing his speed from 0 m/s to 40 m/s in 7 seconds. The acceleration of the racecar is _________
Fill in the blank(s) with correct word
A 30-kg child rides on a circus Ferris wheel that takes her around a vertical circular path with a radius of 20 m every 22 s. What is the magnitude of the resultant force on the child at the highest point on this trajectory?
a. 49 N b. 0.29 kN c. 0.34 kN d. 0.25 kN e. 0.76 kN