An object has a mass of 5 kg. What force is needed to accelerate it at 6 m/s2?

Which would prevent a plant from growing

Does the sun release radiant energy?

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?