A simple pendulum of length 2.5m makes 5.0 complete swings in 16 s. What is the acceleration
of gravity at the location of the pendulum?
Picture the Problem: A mass is attached to the end of a 2.5-meter-long string, displaced slightly from t
Study questions for the lectures 1-4
1. What information(s) could you obtain from a genetic approach of studying mutants
defective in a particular process?
Function of the protein it coded for
Order and # of defective genes through complementary analysis
DNA replicated in 15N first, transfered to 14N
Centrifuged and bands analyzed
Semi-conserative because when DNA replicated in 14N medium, lght and heavy density DNA present, upon frther replication, intermediate and light density present
kornberg and chambon determined that fundamental packing unit of chromatin is nucleosome.
kossel identified histones
2 types (core and linker)
core- conserved, 11k to 16k daltons MW
linker- variable, >20k Da
core- C end contains portiens fro hi
1. Discuss two difference between a simple and differential stain such as the
The two major differences are that simple staining only uses one dye to examine
shape and arrangement of the cells, while the differential dye uses two dif
Hooke- first to describe microorganisms
COhn- discovered endospores
Communication- not core trait of all life (evolution, metabolism, growth/reporduction are)
Cell Wall -gives structural strength and prevents lysis
Most cultured Archaea are extremophiles
CO2 more soluble in water than O2
veins have lower pO2 pressure than arteries
more O2 dissolved in RBC than plasma
amt of O2 bound to Hb depends on pO2 of plasma, #of O2 RBC
arterial pO2 depends on pO2 in alverolar air, O2 transport cpacity of blood, exch
type 1: gas exchange, large, thing walled, 95% of alveoli
type II: secrete surfactant (reduce surface tension of water)
no muscles, aided by collagen and elastic fibres
minimm interstitial fluid,
alveolar air space > sufactant >inters
BIOLOGY 273 Principles of Human Physiology 1 Spring 2012
Dr. Heidi Engelhardt
ext 38133, B1-280
This course outlines the physiology of several major organ systems of the human body. Topics incl
University of Waterloo
Physical and Chemical Properties of Matter
001, 002, 003, 004, 005
C. Bissonnette, S. Forsey, D. Gilbert, T. McMahon
Date of Exam
University of Waterloo
Term Test 1
Chemistry 254: Thermodynamics
Tuesday 7 June 2011 8:30-9:20 AM
Answer ALL the questions, and do the easy ones first. The weight of each question is
given in the table below.
Under what conditions is dA 0 a condition that defines the spontaneity of a process?
This is the case at constant T and V if no nonexpansion work is possible.
Under what conditions is dG 0 a condition that defines the spontaneity
Chapter 15 Chemical Equilibrium
Consider the reaction represented by the equation
Previously we asked two questions regarding the reaction
1. How fast do A and B react to give C and D?
2. To what extent do A and B react?
The answer to the fi
PHYSICS 117B FINA L EXAMIN ATION F3 ANSWERS M AY 5, 2005
This is a closed-book examination, conducted under the provisions of the Vanderbilt Honor
Code. You may not consult books or notes (including information stored in calculators) or the
test papers of
Physics 112 Final Examination
112 FORMULA SHEET
Page 12 of 12
Simple Harmonic motion
Resistors and Current
x A cost
mass and spring
Waves on a string
, F Tension
P (V ) I
0 1 T T0
Assignment 3 (for grading)
Residents of Hawaii are warned of the approach of a tsunami by sirens mounted on the tops of
towers. Suppose a siren produces a sound that has an intensity level of 120 dB at a distance of 2.0
Assignment 1 for grading)
When a guitar string plays the note "A," the string vibrates at 440
What is the period of the vibration?
Express your answer using two significant figures.
A proud deep-sea fisherman hangs a 65
A person stands, hands at side, on a platform that is rotating at 1.02 rev/second. If the person now raises his arms to a horizontal position, the speed of rotation decreases to 0.72 rev/second. By what factor has the moment of inertia changed?
A record player is spinning at 32 rpm when the motor is switched off. After 6.7 seconds the angular speed has decreased to 28 rpm. Calculate the frictional torque if the record player can be treated as a solid wheel of mass 3.5 kg and radius 8 cm.
A 7 kg mass with an initial velocity of 10 i m/s collides and sticks to a 10 kg mass with an initial velocity of - 5 j m/s.
Find the direction of the final velocity of the two masses with respect to the direction of the x axis.
A) -70.7 degrees
A 6.6 kg mass, M1, is on a horizontal frictionless table. A horizontal string is attached to M1 and it passes over a pulley at the edge of the table to a 4.4 kg mass, M2, that is hanging down freely. Initially the two masses are held stationary and the