As water begins to boil in a kettle the hotter water at the bottom of the kettle closest to the stove begins to rise and the cooler water above sinks and warms. Why does this occur?

The vertical columns on a periodic table are known as the periods and the horizontal rows are known as groups. True False

A group of cells that grow very fast

If a refrigerator draws 2.2 A at 120 V, What is its resistance?

What is the force that opposes motion and can be found anytime two surfaces are in contact? friction momentum net force spring forces

How far does an object move if a 20 N force is applied to it doing 40 J of work?

Which of these could NOT be used to find the mechanical advantage of an inclined plane? A. input force B. output force C. percent efficiency D. length and height of inclined plane

What are the Rules of magnetism

Two spheres of the same radius, but of different masses, are both fully submerged in water. The lighter sphere is held below the water line by a rope anchored to the bottom of the container. The heavier sphere is suspended from a rope.

How does an increase in thermal energy affect molecules?

Which of the following is an example of applied research?