Which statement correctly compares infrared light to ultraviolet light?

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?

Examine the equation. 23490th→23088ra+42he what kind of barrier would you need to block the radioactive particles from this reaction? a.a piece of paper b.a sheet of aluminum foil c. a two-inch block of lead d. a solid concrete block