When you measure distances to stars via parallax, it is better to use kilometers or Astronomical Units as the unit of distance
Indicate whether the statement is true or false
False
You might also like to view...
Projectile Motion: As shown in the figure, a heavy rock is shot upward from the edge of a vertical cliff. It leaves the edge of the cliff with an initial velocity of 15 m/s directed at 25° from the vertical and experiences no appreciable air resistance as it travels. How high is the cliff?
Fill in the blank(s) with the appropriate word(s).
A concave mirror has a focal length of 20 cm. What is the magnification if the object and image distances are 10 cm and ?20 cm, respectively?
A. 1 B. 2 C. 1/2 D. 1/4 E. ?1/2
Two spaceships traveling in opposite directions along parallel lines measure their own and the other spaceship's length while passing one another. The crew on spaceship A says that their ship is 1 000 m long and that ship B is 800 m long. The crew on ship B says that their ship is 1 000 m long and that ship A is 800 m long. At what speed does each crew say that the other ship is traveling
relative to their own ship? a. 0.36 c b. 0.60 c c. 0.64 c d. 0.80 c e. 1.25 c
The modification of the standard Big Bang theory is known as the
a. cosmic model. b. Hubble-Leavitt model. c. inflationary model. d. Hertzsprung-Russell model.