Problem Set Two
1. At a track meet, a runner runs the 100 meter dash in 15 seconds. What was the
runners average speed?
Speed= Distance/ Time Distance, D = 100m
Runners time, t = 15 seconds
Average speed= Distance/ time taken= 100/15= 6.66 m/s
2. A jogger
Physical Science I
Laboratory/Exercise 7
1. In a simple circuit a 6-volt dry cell pushes charge through a single lamp which has a
resistance of 3 . According to Ohms law the current through the circuit is
_2_ Amps.
V=IR
I = (6 V) / (3
)
I=2A
2. If a secon
Module 8
Laboratory/Exercise 6
Thermal Energy
All matter can exist in three phases: solid, liquid, or vapor. Read the material in the
material in the section Heat and Phase Transition and then answer the following:
1. How many calories of heat are require
Laboratory Exercise 3
Use the following data to calculate the velocity and acceleration of a free falling object.
The object is 45 meters above the ground and free falls to the earth.
Time
Distance
seconds
Meters
Average
Velocity
Final Velocity
Accelerati
Problem Set Three
Notes: Use 9.8 m/s 2 for the acceleration due to gravity. For Newton's Law calculations,
mass must be expressed in kg and velocity must be expressed in m/s.
1. An automobile weighs 3000 lb. Calculate the weight of the car in N and its ma
Physical Science 1
Laboratory Exercise 4
DATA TABLE
Mass of wagon = M = 200 g = 0.200 kg
Distance (s) = 0.500 meters
(1)
(2)
Hanging
Force
Mass
Hanging
kg
Mass
(3)
(4)
(5)
(6)
Average
Final
a
Time
Velocity
Velocity
wagon
seconds
0.500/Time
Col (4)
Col (5)
Physical Science I
Laboratory/Exercise 5
Conservation of energy
1. An automobile traveling at 25 km/hour has kinetic energy equal to 1 x 10 4J.
a. What is the mass of the car?
v=24kmph=24*1000/3600m/s
=6.6667m/s
KineticEnergy=1/2*m*v^2=10^4
m=2*10^4/6.67^
Problem Set One
1. What is the volume of 1.0 liter expressed in mm3?
1liter=1000cm^3=10^6mm^3
2. A rectangular tank has measurements of 25 cm x 45 cm x 60 cm. What are its
measurements in inches?
1 cm^3 0.061023 in^3
v = 675x10^2 (0.061023)
v = 4119.05 in
Problem Set Three
Notes: Use 9.8 m/s 2 for the acceleration due to gravity. For Newton's Law calculations, mass must be
expressed in kg and velocity must be expressed in m/s.
1. An automobile weighs 3000 lb. Calculate the weight of the car in N and its ma
Physical Science I
Laboratory/Exercise 3
Use the following data to calculate the velocity and acceleration of a free falling object.
The object is 45 meters above the ground and free falls to the earth.
Time
Distance
seconds
Meters
Average
Velocity
Final
Laboratory/Exercise 10
Reflection of Light
What can you conclude about your distance from the mirror and the size of image you
see? The image gets smaller the father away you get
Is there a difference in how much of yourself you can see (i.e.) can you see
Laboratory/Exercise 12
1. Give the number of protons and the number of neutrons in the nucleus of the
following isotopes:
a)
Carbon-14 6 Protons 8 Neutrons
b)
Cobalt-60 27 Protons 33 Neutrons
c)
Gold-197 79 Protons 118 Neutrons
d)
Uranium-235 92 Protons 1
Laboratory/Exercise 11
The Periodic Table and Electron Configuration
Go through the first 20 elements in the chart. Note and record which orbital contains
the additional electron.
Li-Lithium , B-Boron, Na-Sodium, Al-Aluminum, K-Potassium
Click on each ele
Problem Set Eight
1. How much heat must be removed from 500 grams of water at 0C to form ice at
0C? 40cal
2. How much heat is necessary to vaporize 100 grams of water at 100C to form steam
at 100C? 53.9 kcal
3. A 20.0 kg bag of dirt falls 10.0 m at a cons
Laboratory/Exercise 8
Magnetism
The idea of magnetism is said to have originated on 600 BC, by a Greek man
named Thales of Miletus. According to the story, he notices that if you were to rub
amber-fossilized pine sap, which is a plastic-like material, wit
Problem Set Ten
1. The primary of a step-up transformer connected to a 120 V source has 200 turns. If
the output is 480 V, how many turns does the secondary have? 800 turns
2. The primary of a step-down transformer connected to a 240 V source has 1000
tur
Laboratory/Exercise 6
Thermal Energy
All matter can exist in three phases: solid, liquid, or vapor. Read the material in the
material in the section Heat and Phase Transition and then answer the following:
1. How many calories of heat are required to chan
Problem Set Four
1. . A car weighing 15,000 N is speeding down the highway at 90 km/h. What is its
momentum? 25m/s
2. Two ice skaters stand face to face and "push off" and travel directly away from
each other. The boy has a velocity of 5 m/s and he weighs
Lab/ Exercise 9 Sound Waves
1. Print this page and then measure the wavelength and amplitude of this sine
curve
Wave length = _55_ mm
Amplitude = _25_ mm
2. A child is swinging on a playground swing. If she completes one full cycle (i.e.
back and forth on
Problem Set Two
1. At a track meet, a runner runs the 100 meter dash in 15 seconds. What was the runners
average speed?
6.67 m/s
2. A jogger jogs around a circular track with a diameter of 300 meters in 13 minutes. What was
the joggers average speed in me
Problem Set Three
Notes: Use 9.8 m/s 2 for the acceleration due to gravity. For Newton's Law calculations,
mass must be expressed in kg and velocity must be expressed in m/s.
1. An automobile weighs 3000 lb. Calculate the weight of the car in N and its ma
Problem Set Five
1. Two 3 kg physical science textbooks on a book shelf are separated by 0.15 m.
What is the force of gravitational attraction between the books? F = 2.67 *10^-8 N
2. What is the force of gravity between two 1000 kg cars separated by a dis
Problem Set Six
1. A certain sample of brass has a mass of 2 kg and a volume of 240 cm 3. What is its density?
8.3333g /cm3
2. A 50 gram bracelet is suspected of not being pure gold. It is dropped into a glass of water and 4 cm3of
water overflows. Is the
Physical Science I
Laboratory/Exercise 5
Conservation of energy
1. An automobile traveling at 25 km/hour has kinetic energy equal to 1 x 10 4J.
a. What is the mass of the car?
m = 2KE/V^2 = (2 x 10^4)/(6.944m/s)^2 = 414.72kg
b. If the velocity of the car
Problem Set Twelve
1. Index of refraction is defined as the speed of light in a vacuum divided by the speed
of light in the medium. What is the index of refraction for glass? Speed of light c = 3.0
x 108 m/s. Speed of light in glass = 2.0 x 108 m/s. 1.5
2
Problem Set 14
1. Suppose that you are given a 100 gram sample of a radioactive substance with a
half-life of 32 days. How many grams will be left after 192 days? 1.5625g
2. A radioactive substance is found to register 1000 counts per second on a Geiger
c
Physical Science I
Laboratory/Exercise 7
Ohms Law and Power
Part 2 Complete the following calculations. Record your work in the space
provided below each problem.
1. In a simple circuit a 6-volt dry cell pushes charge through a single lamp
which has a res
Problem Set Seven
1. You wish to heat 30 kg of water from 60C to 80C. How many kcal of heat are necessary to
do this? To how many kJ does this correspond? 2,512kJ
2. You submerge 100 grams of steel in 200 grams of water. If the steel has an initial temper
Mini Research Papers
Submission of two Mini Research Papers is required for this course. If both papers
are not submitted, your course grade will be lowered by one letter grade.
The papers should be between 3 and 5 double spaced pages including the
biblio
Problem Set Eleven
1. A periodic wave has a period of 0.40 s. What is the wave frequency? 2.5 Hz
2. Waves moving on a lake have a speed of 2 m/s and a distance of 1.5 m between adjacent crests.
a. What is the frequency of the waves? 1.3 Hz
b. What is the