Which of the following is untrue of water?
a. it is a non-polar molecule.
b. it has strong surface tension.
c. it is the only natural substance to exist as a solid, liquid, and gas at normal temperatures on earth.
d. it has a solid form that is less dense than its liquid form.

What is tan(61)? а. 1.80 b. 0.49 c. 0.61 d. 0.87

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

How do the kidneys affect homeostasis