Identify a true statement about the cosmic microwave background
A) It is blackbody radiation with an apparent temperature of 2.725 ± 0.002 K.
B) It is radiation present in the ultraviolet spectrum.
C) It is gamma radiation with an apparent temperature of 5.755 ± 0.005K.
D) It is radiation that was present before the big bang.
A
You might also like to view...
Velma is in a train headed north past Mort at 30 m/s. Velma has a slingshot that can shoot pebbles at 40 m/s. Velma shoots a pebble toward the rear of the train. Mort observes the pebble's velocity to be
A) 70 m/s north. B) 70 m/s south. C) 40 m/s south. D) 10 m/s south. E) 10 m/s north.
An electric motor can be manually turned and made to act as a generator
a. True b. False Indicate whether the statement is true or false
At about what frequency is Earth struck by a meteorite large enough (about 10 km in diameter) to cause mass extinctions?
A) about every 1 million years B) about every 10 million years C) about every 100 million years D) This has yet to occur on Earth.
Why should pressure affect the convective heat transfer coefficient in boiling?
What will be an ideal response?