**Answer:**

**Explanation:**

Torque produced = tangential force x radius

= 290 x .33

= 95.7 N.m

angular acceleration = Torque / moment of inertia

.816 = 95.7 / moment of inertia

moment of inertia = 95.7 / .816

= 117.28 kgm².

True and you need to do your reasearch more.

Answer:

B. Marginal cost equals long-run average total cost.

Explanation:

The zero profit condition implies that entry continues until all firms are producing at minimum long run average total cost. Since the marginal cost curve cuts the long run average total cost curve at its minimum point, marginal cost and long run average total cost must be equal in long run equilibrium.