1/ Carts of different masses, m, are subject to the same force, F. Their acceler
ID: 2000507 • Letter: 1
Question
1/ Carts of different masses, m, are subject to the same force, F. Their accelerations are measured. The data collected in this experiment is shown in the table below. You are to find the Force acting on the object.
Mass (kg)
Acceleration (m/s2)
0.500
8.9
0.400
12.3
0.300
17.3
0.200
30.4
0.120
34.2
a/ When you plot this data which variable should be used as the independent variable?
b/ When you plot this data which variable should be used as the dependent variable?
c/ In order for a plot of this data to be linear, what quantity must be plotted on the horizontal axis? On the vertical axis?
d/ Use Logger Pro to make a linear plot of the data. What are the values of the slope, intercept and the uncertainties in each?
e/ Determine the value of the force applied to the cart and its uncertainty using your graph of the data?
2/ I got 48 but they said wrong. I don't know why its wrong. Can you help me please !
Mass (kg)
Acceleration (m/s2)
0.500
8.9
0.400
12.3
0.300
17.3
0.200
30.4
0.120
34.2
Problem 17.20 Part A A 60 cm3 block of iron is removed from an 800°C What percentage of the water boils away? furnace and immediately dropped into 200 mL of 20° C water. 48 Submit My Answers Give Up Incorrect, Try Again Provide FeedbackExplanation / Answer
a) we are the one who change mass of carts.
so mass should be independent variable.
b) when we change mass and due to constant force.
acc change accroding to mass.
so acceleration should be dependent variable.
c) F = ma
to make it linear
a = F (1/m)
so 1/m on x axis and a on vertical axis.
graph will be linear
d) slope = magnitude of force
y intrecept = 0
(comparing above equation with y = sx + c)
where s = slope and c = y intercept
e)slope will be force
2) using energy conservation,
mass of iron = 7850 kg / m^3 x (60 x 10^-6 m^3) = 0.471 kg
heat released by iron = heat absorbed by water
0.471 x 450 x ( 800 - T0) = 0.200 x 4186 x (T - 20)
T = 177.58 deg C
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