6 a) White light shines into a prism and forms a spectrum on a screen. What effect, if any, would
you see if a red filter were placed in the path of
the white light?
[2]
b) Would it make any difference if the filter were
placed at the other side of the prism near the
screen?
[1]
c) The screen is changed to a green one. What might
you see now?
[2]
[Total 5)

Which of the following is a homogenous mixture? o a. a toy box filled with toys o b. blood o c. trail mix o d. spaghetti and meatballs submit

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

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?