Which factor is NOT needed to calculate a moving object’s average speed?
A. total time
B. total distance
C. total displacement



An arrow representing the velocity 3 m/s east and an arrow representing the velocity 6 m/s east would have the
A. same direction and same length.
B. different directions and same length.
C. same direction and different lengths.
D. different directions and different lengths.


10. Which equation could be used to solve for the average speed of a car that travels 90 m in 20 seconds?
A- Average Speed= 90m/20s
B- Average Speed= 20s/90m
C- Average Speed= 90m x 20s
D- Average Speed= 20s + 90m

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

explanation:

layer 3 is younger than layer 6.