A 1.8 kg solid disk pulley of radius 0.11 m rotates about an axis through its center. (a) What is its moment of inertia? (b) Starting from rest, a torque of 0.22 m-N will produce what angular acceleration?
What will be an ideal response?
(a) 1.1 × 10-2 kg ? m2
(b) 20. rad/s2
Physics & Space Science
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Earth's atmosphere gets most of its heat from the
A) Sun. B) Earth's core. C) both of these D) neither of these
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A fish is 80 cm below the surface of a pond. What is the apparent depth (in cm) when viewed from a position almost directly above the fish? (For water, n = 1.33.)
a. 50 b. 60 c. 40 d. 70 e. 110
Physics & Space Science
In drinking soda or water through a straw, we make use of
A) capillary action. B) surface tension. C) atmospheric pressure. D) Bernoulli's principle. E) none of the above
Physics & Space Science
How did dark matter behave differently from normal matter during the early stages of the big bang, and how is this important for the formation of stars and galaxies?
What will be an ideal response?
Physics & Space Science