How would measure the melting point of a solid that melts above 100 degree celsius?

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 properties of a moving object are used in determining the object's energy of motion

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)