Mass of trolley (m): (1)
0,9
kg
Mass
m xa
Acceleration
(a)
(mos)
Applied
Force (N)
0
4,04
O112
Tabulate your measurements in the table below.
At from A to B (s)
Average
Kg
At (s)
1
2
3
Hanger only
4,07 4,00
HOS
Hanger +
1 mass piece
10
3,09
3,04 3,10
3,14
Hanger +
2 mass pieces
ao
2,00
Hanger +
3 mass pieces 30
1196
1,91
Hanger +
4 mass pieces
168 1,69 1,TO 1,69
(5)
0,21
2,1 x 103 0, 098
O #4
8,8X10
2,22 2,14
0, 196
01 SS
0102
o zau
0103
01392
0/ 70
(5)
(5)
QUESTIONS AND ANALYSIS
1.
In this experiment identify the...
1.1
independent variable
(1)
1.2 dependent variable
3 E
1.3
controlled variable
Ар со
2.
3
Describe how the effect of friction was minimised in the experiment.
(1)
Use the recorded data to plot a graph that will show the relationship
between the acceleration and the applied force on the trolley. Use a (8)
graph paper.
Ilse the cranh to determine the mass of the trolley.
(4)​

People with normal vision cannot focus their eyes underwater if they aren't wearing a face mask or goggles and there is water in contact with their eyes. in a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina.with the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 2.05cm in front of the eye.)