(1) if a user's input string matches a known text message abbreviation, output the unabbreviated form, else output: unknown. support two abbreviations: lol -- laughing out loud, and idk -- i don't know. (4 pts)

sample input/output:

input an abbreviation: lol

laughing out loud

(2) expand to also decode these abbreviations. (3 pts)

bff -- best friends forever

imho -- in my humble opinion

tmi -- too much information

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.