If a beaker of water is placed under a broiler so that the heating coil is above the beaker. it is observed that only the surface layer boils. the water at the bottom of the beaker remains close to the initial temperature of the water. which of the following statements is the most reasonable conclusion to be drawn from these observations?
a) water is a poor conductor of heat.
b) the sample must contain impurities.
c) water is easily heated by radiation.
d) water exhibits anomalous thermal behavior.
e) the molecular motion in the sample is not random.

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.

Ithink the answer would be a