What is rarefraction

A material that release energy when it burn

True or false the sun produces energy through nuclear fusion

How can you use a graph to represent the motion of an object?

Which organism is a producer 1-oak tree 2-mushroom 3-mountain lion 4-butterfly

When you weigh yourself on good old terra firma (solid ground), your weight is 540 N. In an elevator your apparent weight is 485 N. What is the magnitude of the elevator's acceleration?

In the nucleus of all atoms are sub-atomic particles called protons and neutrons. all protons have a positive charge.

In a polar covalent bond

Lindsay is late to class and is running down the hallway at a speed of 2 m/s the length of the hallway is 150 meters. How long will it take her to run down the hallway?

Which of the following is evidence that groundwater causes erosion and deposition?

Changing the direction of current will or will not affect the strength of an electromagnet