15x 9.8 x .3 = 44.1
15 x 9.8 x 1 = 147
147 - 44.1 = 102.9J
102.9 J
Answer:
831.4 J
Explanation:
Info given:
mass adult: 82.5kg
mass child: 14.7kg
height of wall: 1.25m
g = 9.81m/s^2
PE = mgh
For adult:
mgh = (82.5kg)(9.81m/s^2)(1.25m) = 1011.65 J
For child:
mgh = (14.7kg)(9.81m/s^2)(1.25m) = 180.25 J
Difference in PE: 1011.65 J - 180.25 J = 831.4 J
None of the tables that you have attached is a correct one.
Answer:
A
Explanation:
Yep, your answer is correct. The cart at point A is above all other positions, it has the highest height.
<span>Selection (b) is the best answer. These are the winds found between the 25-degree north and south latitudes, converging at the doldrums just north of the equator. They have been used for centuries to navigate much more quickly around the oceans.</span>
