Different kinds of lenses are used in eyeglasses to help people with eye conditions. Farsightedness is an eye condition in which distant objects appear clear but close objects appear blurry. Nearsightedness is an eye condition in which close objects appear clear but distant objects appear blurry.

Which best describes the type of lens that would help someone with one of these eye conditions?

Concave lenses would help someone who is nearsighted because the lenses make objects look smaller and closer.
Concave lenses would help someone who is farsighted because the lenses make objects look smaller and closer.
Convex lenses would help someone who is nearsighted because the lenses can make objects look smaller and closer.
Convex lenses would help someone who is nearsighted because the lenses can make objects look larger and farther away.

Explain vector addition, triangle method and parallelogram method

Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?

The bubba chump shrimp company processes and packages shrimp for sale to wholesale seafood distributors. the shrimp are transported to the main plant by trucks that carry 1,000 pounds (lb) of shrimp. once the continuous flow processing of the shrimp begins, no inventory is allowed in buffers due to spoilage and all of the shrimp must be processed within 12 hours to prevent spoilage. the processing begins at the sorter, where the trucks dump the shrimp onto a conveyor belt that feeds into the sorter, which can sort up to 500 lb per hour. the shrimp then proceed to the desheller, which can process shrimp at the rate of 400 lb per hour. however, after 3 hours and 45 minutes of processing, the desheller must be stopped for 15 minutes to clean out empty shrimp shells that have accumulated. the veins of the shrimp are then removed in the deveining area at a maximum rate of 360 lb per hour. the shrimp proceed to the washing area, where they are processed at 750 lb per hour. finally, the shrimp are packaged and frozen. what is the daily process capacity of the processing plant (excluding the packaging and freezing)?