Stuff im getting wrong 3

Question 1

when we have a semi log graph (eg x is normal y is log), when it is exponential decay…

Answer 1

graph is linear and gradient is negative!!!

Question 2

Reduce uncertainty in a measured value egs? this is specific to the q for the glider and seeing how far back up the track it bounces each time

Answer 2

-repeat experiment and calc mean to reduce human error
-repeat to detect and discard anomalies
-view air track at right angles to reduce parallax error
-repeat experiment with track direction reversed and average calculated to account for effect of non-level bench
-use video to view position of glider as it reaches top of track to reduce human error

Question 3

When its log log graph what do we know about the relationship between the two variables?

Answer 3

the variables are linked by a power law ie y ∝ x^n