Which coefficient of o2 is needed to balance the equation c3h8 + o2 → 3co2 + 4h2o?

a.2
b.3
c.5
d.6

Awheel rotates without friction about a stationary horizontal axis at the center of the wheel. a constant tangential force equal to 82.0 n is applied to the rim of the wheel. the wheel has radius 0.150 m . starting from rest, the wheel has an angular speed of 12.8 rev/s after 3.88 s. what is the moment of inertia of the wheel?

Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Explain what will happen if decomposers were apsent from a forest ecoysystem.