Astar has an absolute magnitude of 4 and a surface temperature of 5,000 degrees c. according to the hr diagram, list the type of star found at these coordinates.

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)

While preforming an experiment involving a reaction between two chemicals the scientist observes that the reaction container has become warm the observation is an example of