Why did the potassium permanganate crystals start to dissolve in water without being stirred or shaken

You must exert a force of 4.5 N on a book to slide it across a table. If you do 2.7J of work in the process, how far have you moved the book?

Gneiss is a metamorphic rock that is formed when granite is subjected to extreme heat and pressure. This occurs in when: shallow seas evaporate mountains collide fossil sediments form layers magma cools and hardens underground

Football coaches advise players to block, hit, and tackle with their feet on the ground rather than by leaping through the air.

What is the speed of a wave if the wavelength is 100 m and the period is 20 s? 2,000 m/s 120 m/s 80 m/s 5 m/s

The kind of friction that exists between oil and a door hinge

I am looking for this answer : Which shows a correct order of steps in the scientific method? develop a hypothesis, analyze data, make observations, draw conclusions make observations, draw conclusions, develop a hypothesis, analyze data.

A gas in a piston is compressed doing - 439 j of work, and its internal energy increases by 318 j. how much heat flows? (be careful with + and -. + w = expansion. + q = added, + u = temp goes up) (unit = j)

A loop of wire is placed in a uniform magnetic field. (a) For what orientation of the loop is the magnetic flux a maximum? The plane of the loop is perpendicular to the magnetic field. The plane of the loop is parallel to the magnetic field.

Dr. Arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode.

Stephen buys a new mop he travels 3 km south and the. 4 km east and then 3km north how far does he need to go to get back. To where he started