Is an activation energy required to obtain the reaction in studied in this experiment?
No, the reaction takes place spontaneously when the two solutions are mixed at room
temperature.
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The object shown below has mass m and velocity 
. The direction of its angular momentum vector with respect to an axis perpendicular to the page through point O is
A. downwards. B. to the right. C. into the page. D. up out of the page. E. counterclockwise.
A fast duck is flying 
mi/h at the same altitude as a slow airplane flying with a velocity of 
mi/h. How fast and in what direction is the duck moving relative to the airplane?
What will be an ideal response?
A cat leaps to try to catch a bird. If the cat's jump was at 60° off the ground and its initial velocity was 2.74m/s what is the highest point of its trajectory, neglecting air resistance?
A) 0.29 m B) 0.58 m C) 10.96 m D) 0.19 m
Exhibit 15-1
A dictator has built a bunker for his use in emergencies. Its dimensions are shown below. When it floods to ground level during a tropical storm, air is trapped above the dashed line in the bunker.
?
?
Use this exhibit to answer the following question(s).
Refer to Exhibit 15-1. The absolute pressure at point A, in Pa, is
A. 3.92 × 105. B. 4.90 × 105. C. 5.39 × 105. D. 5.88 × 105. E. 6.89 × 105.