A wheel turns with angular speed of 30 rev/s is brought to rest with constant acceleration. It turns 60 rev before it stops. Calculate its angular in rad/s²​

Since the angular acceleration α is constant,

0² - (30 rev/s)² = 2α (60 rev)

Solve for α :

α = -(30 rev/s)²/(120 rev) = -7.5 rev/s²

One revolution corresponds to an angular displacement of 2π radians, so

α = (-7.5 rev/s²) × (2π rad/rev) ≈ -47.12 rad/s²

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:

b.transmitters send radio waves, and receivers capture radio waves.