Johannes kepler discovered the laws that bear his name by analyzing the observational data of which astronomer?
a. tycho brahe
b. galileo galilei
c. sir isaac newton
d. nicolaus copernicus

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.

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

Use the drop-down menus to answer each question. which line represents the movement of a cart with a constant acceleration? a which line represents the movement of a cart with a constant velocity? c which lines represents a cart with no velocity or acceleration? b