In order for a combustion reaction to occur, like the burning of fossil fuels, what element is required?

Sulfur

Hydrogen

Oxygen

Helium

Define rotational speed? - short answer

8. In what family would each of these elements be classified? Radium - Tin - Iodine - Cesium -

a student coils a copper wire around a bar magnet what action will cause a device to generate electricity

What is the first stage in the erosion process?

Given this kinetic energy, what is the tallest hill this roller coaster train can reach the top of?

Find the work done by a 25N force applied for 6 meters

The buildup of charges on an object is called

Which of the following statements is true? The freezing and boiling temperatures of a substance are the same. The freezing and condensation temperatures of a substance are the same. The freezing and melting temperatures of a substance are the same.

What's bigger 32A or 32B

Two charged objects have a repulsive force of. 080 N. if the charge of both of the objects is doubled, then what is the new force?