While performing the dysphagia screening for the patient wit…

While performing the dysphagia screening for the patient with stroke, you noticed the patient had no facial weakness or asymmetry. Hence, the next step is to have the patient swallow about 30 mL of water.   If the patient coughs, has difficulty swallowing, or has a wet or gurgly voice afterward, keep the patient NPO until evaluated and cleared by a physician or speech and language pathologist. 

A clear glass light bulb is placed from a convex lens havin…

A clear glass light bulb is placed from a convex lens having a focal length, as shown in the Figure below. Use ray tracing to get an approximate location for the image. Then use the thin lens equations to calculate (a)   the location of the image and (b)   its magnification. Verify that ray tracing and the thin lens equations produce consistent results.