Answer:
Total Mechanical Energy of the gymnast = 1940J = 1.94 kJ
Explanation:
Total Mechanical Energy = KE + PE + SE
Kinetic Energy,
Potential Energy,
Strain Energy,
Since there is no force of deformation, x = 0, SE = 0
Total Mechanical Energy = 225 + 1715
Total Mechanical Energy of the gymnast = 1940J = 1.94 kJ
Answer: 1600 km from the surface
Explanation:
Therefore, 8000 km - 6400 km = 1600 km from the surface
Answer: - 0.75 m
Explanation: The displacement will be the sum of the slope of the graph within the given time. From time 8s to 16s, the slope m will be; Slope = (15 - 6) / (16 - 8) Slope = 9 / 8 From time 16s to 24s Slope = (15 - 0) / ( 16 - 2 Slope = -15 / 8 Displacement = 9/8 - 15/8 Displacement = -6/8
Displacement = - 0.75 m
Hot air is less dense than cold air, causing it to displace and rise to the top.