Explanation:
Given that,
Mass of the disk, m = 1 kg
Translational speed of the disk, v = 3 m/s
Radius of the disk, r = 0.39 m
(a) Let K is the tranlational kinetic energy of the disk. Its formula is given by :
K = 4.5 J
(b) Let K' is the rotational kinetic energy of the disk. Its formula is given by :
K' = 2.25 J
Hence, this is the required solution.
Answer:
meters per second squared
Explanation:
Because acceleration is equal to velocity over time where velocity is meters per second and time is measured in seconds making acceleration ms-2
Explanation:
Beloware attachments containing the complete question and solution.
The background radiation is associated with a temperature of about 2.73 Kelvins (not Celsius). There is no particular reason for it to be at this specific value. This temperature is a snapshot of an ongoing process taken at our point in time. This temperature continues to change from where it used to be - many orders of magnitude higher in the early stages of our universe model - to today's measured value. The expanding universe view implies this temperature continues to decline as the universe expands, as you pointed out. It is just happening on an extremely slow time scale that we consider this value to be a constant.
