what is the angular momentum of a 1.25 kg mass rotating on the end of a string 1.0 m long at an angular speed of 180 radians/s?

a) 450 kg m2/s

b) 144 kg m2/s

c) 225 kg m2/s

option C

Explanation:

Angular momentum equal to radius times linear momentum

So ang momentum equal to

1 meter x (MV)

1 m x (1.25 kg x 180 m/s)

225 kg m square/second

Hence option C

depends on what you mean by "group." for order, it would be coleoptera (beetles). for class, it would be insecta (insects). for phylum, it would be the arthropoda (animals with jointed exoskeletons).

explanation:

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.