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What happens to the polarity of an electromagnet when the direction of the current passing through it is reversed?

ASSIGNMENT 1. Distinguish between constructive and destructive interference. Please use 3 content relatedsentences. (ref: p.394-399) 2. Explain how surface waves can have characteristics of both longitudinal waves and transverse waves.Use 3 content related sentences. (ref: p.388-393) 3. A lifeguard on a beach observes that waves have a speed of 2.60 m/s and a distance of […]

What molecule in our atmosphere absorbs ultraviolet?-Why are the largest telescopes reflectors instead of refractors?

Assignment 1.The shorter the wavelength, the [more, less] energy it has. 2.    The longest wavelength of light is how many nm? 3.    Which has the shorter wavelength, red or blue light? 4.    The shortest electromagnetic waves are called what? 5.    What molecule in our atmosphere absorbs ultraviolet? 6.    A [reflector, […]

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