A planet is in a elliptical orbit around a star as shown above which best represents the mechanical energy

Which atomic model was proposed as a result of j. j. thomson’s work?

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same

You throw a ball upward and let it fall to the ground. your friend drops an identical ball straight down to the ground from the same height. is the change in kinetic energy (from just after the ball is released until just before it hits the ground) of your ball greater than, less than, or equal to the change in kinetic energy of your friend's ball?