Got an f in physical science. me plzzz

The intensity, or loudness, of a sound can be measured in decibels (db), according to the equation , where i is the intensity of a given sound and is the threshold of hearing intensity. what is the intensity, in decibels, [i(db)], when ? use a calculator. round to the nearest whole number. 8 9 19 80

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?

Based on this activity, is kinetic energy always transformed into potential energy?