Light is traveling in air at a speed of 300,000 km/s. which substance would cause the light to refract the least? a. ruby (speed of light = 170,000 km/s) b. glass (speed of light = 200,000 km/s) c. water (speed of light = 225,000 km/s) d. diamond (speed of light = 120,000 km/s)

Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?

The speed of light can be used to measure the