The parallax angle of the Sun is 1 arc second

a. True
b. False
Indicate whether the statement is true or false


False
RATIONALE: For p = 1", d = 1 pc and the Sun is not at 1 pc.

Physics & Space Science

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A baseball is hit at ground level. The ball is observed to reach its maximum height above ground level 3.0 s after being hit. And 2.5 s after reaching this maximum height, the ball is observed to barely clear a fence that is 97.5 m from where it was hit. How high is the fence?

a. 8.2 m b. 15.8 m c. 13.5 m d. 11.0 m e. 4.9 m

Physics & Space Science

You do not see your image when you look at a flat rough aluminum surface because of specular reflection

a. True b. False Indicate whether the statement is true or false

Physics & Space Science

An object that is 4.0 cm tall is placed 15 cm in front of a concave mirror of focal length 20 cm

(a) Where is the image formed and how far is it from the mirror? (b) How tall is the image?

Physics & Space Science

As a spaceship is moving toward Earth, an Earthling measures its length to be 325 m, while the captain on board radios that her spaceship's length is 1150 m. (c = 3.00 × 108 m/s)

(a) How fast is the rocket moving relative to Earth? (b) What is the TOTAL energy of a 75.0-kg crewman as measured by (i) the captain in the rocket and (ii) the Earthling?

Physics & Space Science