PHYS 261 Cumulative Lab Exam | Questions with Verified Answers
3 views 0 purchase
Course
PHYS 261
Institution
PHYS 261
PHYS 261 Cumulative Lab Exam | Questions with Verified Answers $A$5 means? Fixed cell How to plot cartesian coordinates Scatter chart Solver Minimizes or maximizes a cell by varying other cells To use a macro, you may have to first: Go to view tab and click on the macro button To exit a lab templ...
Solver
Minimizes or maximizes a cell by varying other cells
To use a macro, you may have to first:
Go to view tab and click on the macro button
To exit a lab template:
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?
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?
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?
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?
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.
In this lab, the position of a cart will be measured using a sonic ranger. This measures
the position by:
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?
0.068 N
Mass9.8sin(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?
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.
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?
Yes
Chi-squared=sum((xi-xtheory)/deltax)^2
Chidist(2.83,1)=0.09
USE EXCEL FOR CHIDIST
Two carts approach each other, collide, and stick together after the collision. This is an
example of what type of collision:
Perfectly inelastic collision
Two carts collide and bounce off each other. If there are no external forces acting on the
system:
The total kinetic energy can change during the collision but the total momentum of the
carts must be the same before and after the collision.
A cart with mass 0.30 kg and velocity 0.20 m/s collided on an air-track with a cart with
mass 0.40 kg and velocity -0.10 m/s. What is the final velocity in m/s of the two carts if
they stick together?
0.029 m/s
m1v1+m2v2=(m1+m2)vf
What provides the vertical force to balance the force of gravity on the pendulum bob?
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller NurseHenny. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.99. You're not tied to anything after your purchase.
