A bird is gliding with its wings stretched out. The bird tilts its wings and glides upward. What happens to the bird's energy as it moves upward?
A. The bird's energy increases.
B. The bird's energy decreases.
C. Its kinetic energy increases.
D. Its potential energy increases.

4. a 75.0 g piece of ag metal is heated to and dropped into 50.0 g of water at the final temperature of the mixture is what is the specific heat capacity of silver? 5. a 465 g chunk of iron is removed from petrucci, ralph h.. general chemistry (p. 290). pearson education. kindle edition.