WILL AWARD OVER 50 POINTS TO WHOEVER ANSWERS FIRST

Use the data you have so far to explain what happens to a light wave when it encounters a boundary between two media. Make sure your answer includes relevant science vocabulary. Note: this is a pretty broad question, and should probably be answered in more than a few sentences.

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c

If anyone who can me with this hw? i would really appreciate it

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b. b. at twice the distance, the magnitude of the field is 2b. c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.