Question

Graphing skill's in Viscosity The student should use the given experimental data for viscosity experiment, where d is the diameter of the ball, t is the time that the ball takes to fall a distance L and v is the terminal velocity of the ball. d(10?m) | d²(10?m²) | t(s) | v(10?m/s) 1.9 | 3.6 | 55.0 | 10.9 3.4 | 11.6 | 17.2 | 34.9 4.9 | 24.0 | 8.3 | 72.5 6.4 | 4.85 | 9.0 | 123.6 It's proposed to plot v versus d² 1)Calculate the best scale for: (2 Marks) x- axis:.................................................................................................................................... y- axis:.................................................................................................................................... 2) Plot the values of velocity v versus d², a straight line should be produced? (3 Marks) 3) Determine the slope point's and calculate the slope of the line and write its unit (3 Marks) x? :......................................... x? :......................................... y? :......................................... y? :......................................... Slope of the line:- ............................................................................................................. 4) The formula for viscosity experiment is v = g(?-?) / 18? * d² Find the experimental value of coefficient of viscosity (????) and write its unit: (1 Mark) Given: density of ball ? = 7870 kg/m³, density of liquid ? = 1262 kg/m³ and g = 9.8 m/s² (????) = ............................................................................................................. 5) Calculate the percentage error between theoretical (??? = 1.2kg / ms ) and experimental (????) values of viscosity of a given liquid glycerin: (1 Mark) ............................................................................................................................................................

          Graphing skill's in Viscosity
The student should use the given experimental data for viscosity experiment, where d is the diameter of the ball, t is the time that the ball takes to fall a distance L and v is the terminal velocity of the ball.

d(10?m) | d²(10?m²) | t(s) | v(10?m/s)
1.9 | 3.6 | 55.0 | 10.9
3.4 | 11.6 | 17.2 | 34.9
4.9 | 24.0 | 8.3 | 72.5
6.4 | 4.85 | 9.0 | 123.6

It's proposed to plot v versus d²
1)Calculate the best scale for: (2 Marks)
x- axis:....................................................................................................................................
y- axis:....................................................................................................................................
2) Plot the values of velocity v versus d², a straight line should be produced? (3 Marks)
3) Determine the slope point's and calculate the slope of the line and write its unit (3 Marks)
x? :......................................... x? :.........................................
y? :......................................... y? :.........................................
Slope of the line:- .............................................................................................................
4) The formula for viscosity experiment is v = g(?-?) / 18? * d²
Find the experimental value of coefficient of viscosity (????) and write its unit: (1 Mark)
Given: density of ball ? = 7870 kg/m³, density of liquid ? = 1262 kg/m³ and g = 9.8 m/s²
(????) = .............................................................................................................
5) Calculate the percentage error between theoretical (??? = 1.2kg / ms ) and experimental (????) values of viscosity of a given liquid glycerin: (1 Mark)
............................................................................................................................................................

Graphing skill's in Viscosity
The student should use the given experimental data for viscosity experiment, where d is the diameter of the ball, t is the time that the ball takes to fall a distance L and v is the terminal velocity of the ball.

d(10?m) | d²(10?m²) | t(s) | v(10?m/s)
1.9 | 3.6 | 55.0 | 10.9
3.4 | 11.6 | 17.2 | 34.9
4.9 | 24.0 | 8.3 | 72.5
6.4 | 4.85 | 9.0 | 123.6

It's proposed to plot v versus d²
1)Calculate the best scale for: (2 Marks)
x- axis:....................................................................................................................................
y- axis:....................................................................................................................................
2) Plot the values of velocity v versus d², a straight line should be produced? (3 Marks)
3) Determine the slope point's and calculate the slope of the line and write its unit (3 Marks)
x? :......................................... x? :.........................................
y? :......................................... y? :.........................................
Slope of the line:- .............................................................................................................
4) The formula for viscosity experiment is v = g(?-?) / 18? * d²
Find the experimental value of coefficient of viscosity (????) and write its unit: (1 Mark)
Given: density of ball ? = 7870 kg/m³, density of liquid ? = 1262 kg/m³ and g = 9.8 m/s²
(????) = .............................................................................................................
5) Calculate the percentage error between theoretical (??? = 1.2kg / ms ) and experimental (????) values of viscosity of a given liquid glycerin: (1 Mark)
............................................................................................................................................................

Added by Renee S.

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