A 2.0 - m long string is tied to a 3.0 - kg rock and the rock is twirled around in a circle at a constant speed. The speed of the rock is such that the string makes an angle of 45 degrees with the horizontal . How long does it take the rock to complete one full circle ?

asthenosphere and convection

b mirrors submit a iisner? e. for which optical devices does d sometimes have a positive value? o a a and b o b. a and c o c. b and d 0 d. b and cb

i believe the answer would be:

d. violin, clarinet, french horn, and tuba

where’s the list ? the question is incomplete