Which of these are English units?
a. seconds
b. feet
c. kilometers
d. slugs
A, B, D
Physics & Space Science
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A stable cloud colliding with a shock wave can be compressed and disrupted into fragments
Indicate whether the statement is true or false
Physics & Space Science
The parallax of the star 75 Leo is 0.10 and its apparent visual magnitude is +5.18 . The absolute visual magnitude of 75 Leo is ____________________
Fill in the blank(s) with correct word
Physics & Space Science
Why have so many optical telescopes been built atop Mauna Kea, Hawai'i?
What will be an ideal response?
Physics & Space Science
What is the f-number of a camera lens that has an aperture-opening diameter of 0.30 cm and a focal length of 6.0 cm?
a. 0.30 b. 1.8 c. 20 d. 6.0 e. 0.05
Physics & Space Science