2 When a cube of hot metal is placed in a beaker of cold water, the temperature of the water - A) decreases
B) increases
C) remains the same
D) none of the above

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

What is the temperature in degrees celsius of a substance with a tempature of 49k

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.