A stone thrown horizontally from a cliff with an initial speed of 10 m/s hits the bottom of the cliff in 4.3 s. What is the height of the cliff?
A. 22 m
B. 43 m
C. 69 m
D. 91 m
D. 91 m
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Rotational Dynamics: A 1.53-kg bucket hangs on a rope wrapped around a pulley of mass 7.07 kg and radius 66 cm. This pulley is frictionless in its axle, and has the shape of a solid uniform disk. After the bucket has been released, (a) what is the angular acceleration of the pulley, and (b) what is the acceleration of the bucket?
What will be an ideal response?
The zodiac is tilted by 23.5 degrees relative to the Celestial Equator.
Answer the following statement true (T) or false (F)
A solid cylinder and a hollow cylinder have the same mass and the same radius. Which statement is true concerning their moment of inertia about an axis through the exact center of the flat surfaces?
A) The hollow cylinder has the greater moment of inertia. B) The solid cylinder has the greater moment of inertia. C) Both cylinders have the same moment of inertia. D) The moment of inertia cannot be determined since it depends on the amount of material removed from the inside of the hollow cylinder.
When electrons are placed in a magnetic field, their spin orientations are quantized. How many orientations with respect to the field may result?
a. 1 c. 3 b. 2 d. 4 or more