What is the central idea of paragraph 3? O A. Learning about roller coasters is a fun and
efficient way for students to experience how
potential and kinetic energy work.
OB. Students can easily figure out the kinetic
energy of a roller coaster car they know the
weight and height of the car off the ground.
C. Roller coasters display potential energy when
the car is at the top of the hill and kinetic
energy when it is rushing down the hill.
O D. Students should be excited about all the
potential energy there is when their car pauses
at the top of the hill of a roller coaster.

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.