1.a(n) __ is one in which some or all information is withheld from a subject, the investigator, or both.
2. conducting an experiment one time is called a(n)
3. a(n) __ is a test in which scientists do not change or control variables.
4. a(n) __ is a decision based on the results of an experiment.
use these words: trial, conclusion, observational study, blind experiment, theory, hypothesis

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =