Aprojectile is able to orbit the earth at what speed?

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

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

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?