28. Determine whether each change requires Phase Change
Gain Energy or Lose Energy
Sublimation (s →g)
Deposition (
gs)
Melting (s 0)
Freezing (1 → s)
Vaporization (1 →g)
Condensation (g → 1)

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight

Match each scenario to the form of energy it represents

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )