The graph below shows the force on an object of mass M as a function of time. For the time interval 0 to 4 s, the total change in the momentum of the object is - -Change in p = 0kgm/s
-Change in p = -20kgm/s
-Indeterminable unless the mass is known
-Change in p = 40kgm/s

Which of the statements about waves is true? a. in longitudinal waves, particles move perpendicular to the direction the wave is traveling. b. both transverse and longitudinal waves can travel through water c. electromagnetic waves are a type of longitudinal waves. d. in a transverse wave, particles move parallel to the direction the wave is traveling.

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

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?