You lift an empty milk carton and then you lift a full carton to the same height. Have you done more work in the second case? A.
Yes, because the extra mass of the second carton creates more acceleration
B.
Yes, because the carton with more mass has more potential energy once it is lifted
C.
No, because both are lifted to the same height
D.
No, because both have the same volume

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..

the answer is c. the lower legs are levers, and the knees are fulcrums. the ankles hold the loads.