University of Maryland-College Park PHYS261 Cumulative Lab ||
All Answers are Flawless.
$A$5 means? correct answers Fixed cell
How to plot cartesian coordinates correct answers Scatter chart
Solver correct answers Minimizes or maximizes a cell by varying other cells
To use a macro, you may have to first: correct answers Go to view tab and click on the macro
button
To exit a lab template: correct answers Enter name and section number and save file using macro
You measure the length of the same side of a block five times and find: b=11.0, 11.1, 11.2, 11.2,
and 11.3 mm. What is the best estimate for b? correct answers 11.16 mm
Take the average
You measure the length of the same side of a block five times and each measurement has an
uncertainty of 0.10 mm. What is the uncertainty in the best estimate for b? correct answers
0.0447
=0.10/sqrt(5)
Yoy measure the lengths of three sides of a block and find a=12.23 mm, b=14.51 mm, c=7.45
mm with an error of +-0.030 mm in each measurement. What is the uncertainty in the volume of
the block? correct answers 6.8 mm^3
(DeltaV/V)^2=(deltaa/a)^2+(deltab/b)^2+(deltac/c)^2
, A block is measured to have mass M=25.3 g and volume V=9.16 cm3 with an uncertainty of
deltaM=0.050 g in the mass and deltaV=0.050 cm3 in the volume. What is the uncertainty in the
density? correct answers 0.016 g/cm3
(Deltap/p)^2=(deltaM/M)^2+(deltaV/V)^2
A block is measured to have a density p=2.76 g/cm3 with an uncertainty of deltap=0.030 g/cm3.
Find chi-squared when the measured density is compared to the accepted density p=2.70 g/cm3.
correct answers Chi-squared=4
Chi-squared=sum((xi-xtheory)/deltaxi)^2
In this lab, the position of a cart will be measured using a sonic ranger. This measures the
position by: correct answers Emitting an ultrasonic pulse
A cart of mass m=0.20 kg rides on an air track that is tilted at an angle 2 degrees from the
horizontal. What is the magnitude of the total force on the cart? correct answers 0.068 N
Mass*9.8*sin(theta)
A cart of mass m=0.25 kg rides on an air track that is tilted 3 degrees from the horizontal. What
is the magnitude of the cart's acceleration? correct answers 0.51 m/s^2
9.8*sin(theta)
A sonic ranger measures positions X=0.10 m, 0.15 m, 0.22 m, 0.28 m at times t=0 s, 0.10 s, 0.20
s, and 0.30 s. Find the magnitude of the average velocity between t=0.10 s and 0.20 s. correct
answers 0.7 m/s
Deltax/deltat
Suppose you measure g=9.7 m/s^2 with an uncertainty of deltag=0.060 m/s^2. Is this consistent
with the accepted value g=9.801 m/s^2? correct answers Yes
Chi-squared=sum((xi-xtheory)/deltax)^2
Chidist(2.83,1)=0.09
All Answers are Flawless.
$A$5 means? correct answers Fixed cell
How to plot cartesian coordinates correct answers Scatter chart
Solver correct answers Minimizes or maximizes a cell by varying other cells
To use a macro, you may have to first: correct answers Go to view tab and click on the macro
button
To exit a lab template: correct answers Enter name and section number and save file using macro
You measure the length of the same side of a block five times and find: b=11.0, 11.1, 11.2, 11.2,
and 11.3 mm. What is the best estimate for b? correct answers 11.16 mm
Take the average
You measure the length of the same side of a block five times and each measurement has an
uncertainty of 0.10 mm. What is the uncertainty in the best estimate for b? correct answers
0.0447
=0.10/sqrt(5)
Yoy measure the lengths of three sides of a block and find a=12.23 mm, b=14.51 mm, c=7.45
mm with an error of +-0.030 mm in each measurement. What is the uncertainty in the volume of
the block? correct answers 6.8 mm^3
(DeltaV/V)^2=(deltaa/a)^2+(deltab/b)^2+(deltac/c)^2
, A block is measured to have mass M=25.3 g and volume V=9.16 cm3 with an uncertainty of
deltaM=0.050 g in the mass and deltaV=0.050 cm3 in the volume. What is the uncertainty in the
density? correct answers 0.016 g/cm3
(Deltap/p)^2=(deltaM/M)^2+(deltaV/V)^2
A block is measured to have a density p=2.76 g/cm3 with an uncertainty of deltap=0.030 g/cm3.
Find chi-squared when the measured density is compared to the accepted density p=2.70 g/cm3.
correct answers Chi-squared=4
Chi-squared=sum((xi-xtheory)/deltaxi)^2
In this lab, the position of a cart will be measured using a sonic ranger. This measures the
position by: correct answers Emitting an ultrasonic pulse
A cart of mass m=0.20 kg rides on an air track that is tilted at an angle 2 degrees from the
horizontal. What is the magnitude of the total force on the cart? correct answers 0.068 N
Mass*9.8*sin(theta)
A cart of mass m=0.25 kg rides on an air track that is tilted 3 degrees from the horizontal. What
is the magnitude of the cart's acceleration? correct answers 0.51 m/s^2
9.8*sin(theta)
A sonic ranger measures positions X=0.10 m, 0.15 m, 0.22 m, 0.28 m at times t=0 s, 0.10 s, 0.20
s, and 0.30 s. Find the magnitude of the average velocity between t=0.10 s and 0.20 s. correct
answers 0.7 m/s
Deltax/deltat
Suppose you measure g=9.7 m/s^2 with an uncertainty of deltag=0.060 m/s^2. Is this consistent
with the accepted value g=9.801 m/s^2? correct answers Yes
Chi-squared=sum((xi-xtheory)/deltax)^2
Chidist(2.83,1)=0.09
