The diffraction grating is illuminated with violet light. When the grating is illuminated with red light, the picture of the diffraction spectrum on the screen ...

Consider two metallic rods mounted on insulated supports. one is neutral, the other positively charged. you bring the two rods close to each, but without contact, and briefly ground the the neutral rod by touching it with your hand. show answer correct answer what would be resulting charge (if any) on the initially neutral rod

15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?