Iwill give brainliest

mrs. brown's science class is doing an experiment with sound waves. the class tested several different materials to see how quickly a sound wave would travel through each of the mediums. predict the order the materials were placed in if the class put them in order from slowest sound wave to fastest sound wave.

group of answer choices

a: air, desk, water

b: water, air desk

c: air, water, desk

d: desk, water, air

A. Air, desk, water. sound travels the slowest through air and the fastest through liquids. solids are somewhere in the middle.

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

The correct answer is  "c".  it is "c" because melting is an endothermic change, and endothermic get's energy from surroundings.