The rear windows of some cars have holes in them so that motors inside the cars can operate wiper blades outside the cars. These holes were diamond drilled at the factory before the glass was tempered. If a local car glass company were to try to drill a hole in a car window that had already been tempered,
A. the diamond drill would be reflected because the speed of light is almost the same in tempered glass as it is in diamond.
B. the diamond drill would break because tempered glass is much harder than normal glass.
C. the window would vibrate violently at one of the tones of the "well-tempered" scale and would probably crack.
D. the window would tear itself into tiny pieces as soon as the drill reached the central portion of glass inside the window.
Answer:D
The rear windows of some cars have holes in them so that motors inside the cars can operate wiper blades outside the cars. These holes were diamond drilled at the factory before the glass was tempered. If a local car glass company were to try to drill a hole in a car window that had already been tempered,
A. the diamond drill would be reflected because the speed of light is almost the same in tempered glass as it is in diamond. B. the diamond drill would break because tempered glass is much harder than normal glass. C. the window would vibrate violently at one of the tones of the "well-tempered" scale and would probably crack. D. the window would tear itself into tiny pieces as soon as the drill reached the central portion of glass inside the window.