Answer:
I think it should be C, which is one
Answer:
Research bias or Experimenter bias
Explanation:
Research bias or Experimenter bias is the phenomena that results when the researcher's preferences or hopes about the result influences the obtained outcomes.
This can also be explained as a result of the unconscious and subjective effect of the researcher's hopes on the data used in an experiment or the participants of the experiment or the outcome of the related experiment.
This can be avoided by the researcher by paying attention to the records made by the participants of the experiment and not based the outcome of the experiment on the basis of the his thinking.
5.678 * 10^10 is the answer
Answer:
E = 4410 J
Explanation:
The net energy change is equal to the change in potential energy
ΔPE = mgΔh = 50(9.8)(16) = 7,840 J
However some of that energy went into the stretch of the spring.
that stretch is found setting the spring force equal to the weight
kx = mg
x = 50(9.8)/35 = 14 m
so energy stored in the spring is
PS = ½kx² = ½(35)(14²) = 3,430
energy lost to friction is 7840 - 3430 = 4,410
