WAVES + THERMODYNAMICS
Retorin
YEAR 11 PHYSICS
EXAM - 1
SHORT ANSWERS
16.
** Copper has a specific heat capacity of 0.39kJ kg 2 °c and water has a specific heat capacity of 4.2 kJ kg 2 °c. What will
be the final temperature of the contents in an insulated container if 250g of copper at 90°C is placed into 400mL of wa-
ter at 15°C

Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.