Aglass plate whose index of refraction is 1.57 is immersed in a liquid. the surface of the glass is inclined at an angle of 54° with the vertical. a horizontal ray in the glass is incident on the interface. the liquid is an oil whose index of refraction is 1.40. the incident horizontal ray refracts at the interface. what is the angle that the refracted ray, in the oil, makes with the horizontal?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?

The chart shows the costs and shipping times for materials that a company needs to build a new product. which describes the best trade-off if the company needs to start building their product within the next two years? they should order the domestic materials because it is always best to choose the fastest shipping time. they should order the imported materials because it is always best to choose the lowest cost for materials. since the shipping time is longer, they should order the domestic materials because the additional cost is worth it to get the materials in time. even though the shipping time is longer, they should order the imported materials because they are less expensive and should arrive in plenty of time to build the product.