Most of the stars in the milky way will end their lives as a. white dwarfs. c. supernovas. b. black holes. d. red giants. select the best answer from the choices provided a b c d

Explain why the aperture of the spherical mirror should be small compared to the radius of curvature of the mirror.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

Which of the following are guidelines to follow for obtaining accurate observations