To demonstrate refraction, emily’s teacher places a glass rod in water. the glass in the water will appear a) curved. b) darker. c) smaller. d) twisted.

A

Explanation:

Refraction of a wave is due to change in its speed when it enters a different media of a different density. Due to this change, the wave changes phase at the transition of the two media and to the observer, the wave (this case light) will seem to bend at this point.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".

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