What are the two forces involved when a machine is used?

-friction and density

-potential and kinetic

-input and output

-gravity and friction

A box exerts 10,000 Pa of pressure on the ground. If the box weighs 1000 N, how much area is in contact with the ground? 10,000,000 m2 0.1 m2 11,000 m2 10 m2

How did later discoveries change the model of Mendeleev's periodic table to what we accept today? A) Mendeleev's periodic table was labelled as inaccurate and his founding principles were scrapped.

what is the mass of a basketball that has a kinetic energy of 100 and is traveling at 5 meters per second

What s a defining feature of a system?

Does heat demagnetize?

How does the idea of rotating disk in the nebular model explain certain observed celestial phenomena?

If a small child were to release a balloon into the atmosphere, what would happen to the size of the balloon as it makes it way higher in the sky?

Is a aluminum pie plate an element

The age of the solar system can be established by radioactive dating of

What changes in the original atom are expected as a result of this natural phenomenon