In astronomy, the term perihelion refers to the point in the orbit of an asteroid, comet, or planet at which it is closer to the sun. aphelion refers to the point at which the object is the furthest away from the sun. research facts about the dwarf planet ceres. calculate the average orbital speed of ceres in miles/hours when it is closest to the sun and when it is the furthest away.

i think the answer is a, hope this : )

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

answer: the potential energy decreases from 379 j to 243 j

explanation:

for the law of conservation of energy, the total energy in a system must be conserved. the total energy of the system is given by the sum of kinetic (k) and potential (u) energy:

e = k + u

the total energy is e=675 j, and this does not change.

initially, the kinetic energy is k=296 j, so the potential energy is

at the end, the kinetic energy is k=432 j, so the potential energy is

so, we see that the potential energy has decreased from 379 j to 243 j.