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
b
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The Jovian problem refers to
a. the high speed with which the Jovian planets rotate on their axes. b. the large number of satellites that orbit each Jovian planet. c. the existence of rings around the Jovian planets. d. the excess heat radiated by the larger of the Jovian planets. e. the apparently short period of time that disks exist around stars from which Jovian planets can form.
An elastic collision of two objects is characterized by the following
A) Total momentum of the system is conserved. B) Total kinetic energy of the system remains constant. C) Both A and B are true. D) Neither A nor B are true.
A home appliance is rated at 250. watts ic connected to 120. V
(a) What current does it draw? (b) What is its resistance? (c) How many kw-h does it use in one 24-hour day?
A uniform meter stick with a mass of 135 g rotates about an axis perpendicular to the stick passing through the center of the stick with an angular speed of 3.50 rad/s2. What is the magnitude of the angular momentum of the stick?
A) 0.0394 kg?m2/s B) 0.473 kg?m2/s C) 0.0739 kg?m2/s D) 0.158 kg?m2/s E) 0.0236 kg?m2/s