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.
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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?
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
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?
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