In a physics demonstration, two rubber balls are dropped down a tube towards the ground, with the lighter ball behind, and not quite in contact with, the heavier ball
The heavier ball collides with the ground and bounces, then collides with the still descending lighter ball. Assume that all the collisions are elastic. In one such demonstration, the heavier ball has a mass of 500 grams, the lighter one a mass of 100 grams, and they are released 1.00 m above the ground. How high does the lighter ball rise after the two collisions? A) 5.44 m
B) 10.3 m
C) 2.95 m
D) 5.89 m
E) 1.00 m
A
You might also like to view...
Neutrinos are created in reactions in the _______ of the Sun
a. corona b. chromosphere c. photosphere d. core
A simple beam AB with an overhang BC is loaded as shown in the figure. The bending moment at the midspan of AB is approximately:
(A) 8 kN?m
(B) 12 kN?m
(C) 17 kN?m
(D) 21 kN?m
A spherical conductor (radius = 1.0 cm) with a charge of 2.0 pC is within a concentric hollow spherical conductor (inner radius = 3.0 cm, outer radius = 4.0 cm) which has a total charge of ?3.0 pC. What is the magnitude of the electric field 2.0 cm from the center of these conductors?
A. 23 N/C B. zero C. 45 N/C D. 90 N/C E. 110 N/C
A double-paned window consists of two 60.0 cm × 100 cm glass panes, 2.00 mm thick, separated by a 1.50 cm layer of still air. 25.0 W of heat flow through the window
What is the temperature difference between the indoors and outdoors? The thermal conductivity of glass is 0.840 W/(m•K), and that of air is 0.0234 W/(m•K). A) 27.6 K B) 27.3 K C) 26.9 K D) 26.7 K E) 26.3 K