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In Ampere’s law,

The figure depicts a simplistic optical fiber: a plastic core (n1 = 1.60) is surrounded by a plastic sheath (n2 = 1.44). A light ray is incident on one end of the fiber at angle θ. The rays is to undergo total internal reflection at point A, where it encounters the core-sheath boundary. (Thus there is no loss of light through that boundary.) What is the maximum value of θ that allows total internal reflection at A?

The index of refraction of a certain liquid is 2.3. What is the critical angle for a light ray traveling in this liquid toward a flat layer of air above it?

Suppose the image of an object is upright and magnified 1.75 times when the object is placed 15.0 cm from a lens. Find  the focal length (in cm) of the lens.

In the figure, a real inverted image I of an object O is formed by a certain lens (not shown); the object-image separation is d = 30.8 cm, measured along the central axis of the lens. The image is just 1/5 the size of the object. What is the focal length (in cm) of the lens?

19.A patient is admitted to the medical unit with complaints of excessive thirst and urinating approximately 8 liters per day. Laboratory results show serum sodium of 150 mEq/L (Normal range 136-145) and urine specific gravity of 1.003 (Normal range 1.005-1.030). Which additional clinical manifestation should the nurse expect to find in this patient with suspected diabetes insipidus?

35.A patient with HHS has been receiving treatment for 8 hours. Which assessment findings indicate that treatment is effective? Select all that apply.

32.An emergency department nurse is assessing a 72-year-old patient with type 2 diabetes who presents with severe dehydration and altered mental status. Blood glucose is 780 mg/dL  (normal 70-110- mg/dL) with no ketones present. Which factor in the patient’s history most likely contributed to the development of hyperosmolar hyperglycemic state (HHS)?

50.Which patient should the charge nurse assign to the care of an LPN/LVN?  

38.A nurse administers 1 mg glucagon IM to an unconscious patient with hypoglycemia. Which complication should the nurse anticipate and prepare for?