Physics, 25.10.2019 22:43 leroybennett06
A5.10-kg watermelon is dropped from rest from the roof of a 24.0-m -tall building and feels no appreciable air resistance.
calculate the work done by gravity on the watermelon during its displacement from the roof to the ground.
part a
calculate the work done by gravity on the watermelon during its displacement from the roof to the ground.
part bjust before it strikes the ground, what is the watermelon's kinetic energy?
part cjust before it strikes the ground, what is the watermelon's speed?
part dwould the answer in part a be different if there were appreciable air resistance?
Answers: 3
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Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.
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Physics, 22.06.2019 13:40
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A5.10-kg watermelon is dropped from rest from the roof of a 24.0-m -tall building and feels no appre...
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