Hubbleʹs constant is related to the age of the universe, but the precise relationship depends on the way in which the expansion rate changes with time. for a given value of hubbleʹs constant today (such as 24 km/s/mly), the age of the universe is oldest if what is true?

Why is there friction between objects

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?