What is an extrasolar planet?
a. a planet that is considered an "extra," in that it was not needed for the formation of its solar system.
b. a planet that is extra large compared to what we'd expect.
c. a planet that is larger than the sun.
d. a planet that orbits a star that is not our own sun

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.

Determine the maximum r-value of the polar equation r =3+3 cos 0

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above