A 200 g hockey puck is launched up a metal ramp that is inclined at a 30° angle
The coefficients of static and kinetic friction between the hockey puck and the metal ramp are ?s = 0.40 and ?k = 0.30, respectively. The puck's initial speed is 63 m/s. What vertical height does the puck reach above its starting point?
A) 130 m
B) 270 m
C) 200 m
D) 66 m
A
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One parsec is defined as the distance to a star when the star exhibits a parallax of what angle of arc?
a. One degree b. One second c. One millimeter d. One minute
In the chemistry chapters presented in your
textbook, AM refers to? a) the average mass of all elements taking part in a given reaction. b) the atomic mass of a particular element. c) the total mass present after a reaction has occurred. d) the time during the day prior to 12 o'clock noon.
A bridge is made with segments of concrete 50 m long. If the linear expansion coefficient is 12 × 10^-6 (°C)-1, how much spacing (in cm) is needed to allow for expansion during an extreme temperature change of 150° F?
a. 10 b. 2.5 c. 7.5 d. 5.0 e. 9.5
The resultant force R (in newtons) for the force system shown in the figure is:
(A) 29.5i 1 36.4j – 81.4k
(B) 229.5i – 36.4j 1 78.3k
(C) 236.4i 1 29.5j 1 81.4k
(D) 239.3i 1 36.4j 1 122.2k
