Match each term with the correct wording. 10 points.

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

How do we measure or think of speed in the united states?

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car