James shone a ray of light at a mirror as shown below. Which angle of reflection was not measured accurately? How can you tell this from the
table?
incident ray
mirror
angle of incidence
angle of reflection
reflected ray
diagram 1
He measured the angle of reflection for different angles of incidence.
His results are shown below.
30
40
50
60
70
angle of incidence
o
40
30
50
70
65
angle of reflection​

Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.