a ball of mass 100g rolling on a floor with a velocity 80m/s stops after 8 seconds. what will be the force of the floor on the ball?

How do the kidneys affect homeostasis

Mixing salt in water is an example of physical change

There are multiple tuning forks present in the room, and annie strikes one with a natural frequency of 400 hz. which of these other tuning forks will begin to vibrate through resonance and make the sound louder? a 200 hz tuning fork a 400 hz tuning fork a 800 hz tuning fork a 1600 hz tuning fork