In a vacuum they would both fall at the same speed.
i dont think that science would be the same if the periodic table was not invented because science mainley has to do with the way the elements are organized
hand
If there is an atmosphere - yes. In a vacuum - no.
A person will run faster in air as without oxygen they would die. A dead person doesn't move very quickly. That said if there was no requirement for oxygen, there would be no air resistance in a vacuum and logically they would move at a negligibly grater speed.
Due to the fact that sound does not travel in a vacuum, I would say that it is definitely not in a vacuum. But between oxygen and a liquid comes down to how sound is propagated. Sound is propagated by particles transferring energy by collision (which is why it cannot travel through a vacuum, no particles). Therefore, more particles you have in a given volume, the more likely collisions will happen, thus propagating the wave faster. Thus, sound would travel faster in a liquid due to its higher density.
Milk makes it grow faster I did the science project
Chemistry I would think. Chemistry is the kind of science in which the reaction of two chemicals is observed.
If your looking for a source for a science project I would recommend a TV remote. A wireless mouse, a robotic vacuum cleaner.
No, they would fall at the same speed, as there exists no air-resistance. They would accelerate at the same tempo and hit the ground at the same time.
Figurative sense - they recorded the periodic table for the advancement of science Literal sense - because paper would be more convenient to carry around?
Quarters and feathers would only fall at the same speed in a vacuum. In air, the quarter would fall faster, as it has less air resistance.
A list of freezing points of various materials would be one, or a list of the density of the elements.