Does the uphill or downhill direction matter to the speed of the marble, or is the height the only contributing variable? a. uphill is fastest b. downhill is fastest c. height is the only contributing variable. d. none of these factors affect speed.

In an experiment, how can i change human errors? be specific.

If anyonee has done the momentum lab practical in physics can you give me the answers i am s lostt rnn : (

Acommon technique in analysis of scientific data is normalization. the purpose of normalizing data is to eliminate irrelevant constants that can obscure the salient features of the data. the goal of this experiment is to test the hypothesis that the flux of light decreases as the square of the distance from the source. in this case, the absolute value of the voltage measured by the photometer is irrelevant; only the relative value conveys useful information. suppose that in part 2.2.2 of the experiment, students obtain a signal value of 162 mv at a distance of 4 cm and a value of 86 mv at a distance of 5.7 cm. normalize the students' data to the value obtained at 4 cm. (divide the signal value by 162.) then calculate the theoretically expected (normalized) value at 5.7 cm.