Phases of the Moon
Read pages 42-43 of your textbook to understand the phases of the moon.
Check the night or morning sky at least 3 times each week for 4 weeks.
Record the date and time of the observation and draw a pict
Astronomy Lab Ellipses
Background: Keplers First Law states that; the orbit of each planet around the sun is an
ellipse with the Sun at one focus. In this lab we will investigate the shape and
terminology of the ellipse to help us better understand Kepler
Lab Stellar Temperatures
Background: The surface temperature of a star is related to the wavelength of its peak
intensity. If this peak wavelength can be found, then the temperature can be calculated
using Wiens Law. With the wavelength measured in nanome
PHS 152: Astronomy
Lab 1 Solar System
In this lab we will attempt to make a scale model of our solar system. From, this the
student should hopefully get an indication of the vast distances between planets in our
PHS 152 Lab
Mass of the Earth
We will use the period of a pendulum swing to measure the mass of the
Background: The acceleration due to gravity changes from about 9.78 m/s2 to 9.84 m/s2
depending on where on Earth you are. In general, we u
Lab Create a Solar System
In this lab you will be given the descriptions of twelve celestial objects. From the information
you are given you must construct a viable star system. Complete the table at the end of this
document. List the object, what that ob
I. Introduction A couple of sentences introducing the lab and the main topic.
II. Procedure Leave blank. (Simply indicate where it would be.) (Needs to be more
thorough on the portfolio.)
III. Data (Charts and graphs)
IV. Calculations (Need a s
p = U/c (absorbed light)
p = 2U/c (reflected light)
P (pressure) = I/c (absorbed light)
P (pressure) = 2 I/c (reflected light)
I = I0 cos
n = c/v
n1 sin 1 = n2 sin 2
Sin c = n2/n1
1/p + 1/i = 1/f
d sin = m (m = 0, 1, 2, 3,)
d sin = (m + )
a sin = m
Des Moines Area Community College
General Physics II PHY 161 E1
Instructor: Kevin Menges Office: Bldg. 4, Rm 18
Meeting Time: MW 6:00 9:00 PM Bldg. 4, Rm 03
Prerequisite: PHY 160 or instructors permission
Credit Hours: 5 CRN: 23289
* Electromagnetic waves
o Changing magnetic fields create electric fields.
o Changing electric fields create magnetic fields.
o Here we have a sort of symmetry.
o Together, the electric and magnetic fields acting together can produce a travelin
Electric Charge and Fields
* Electric Charge
o Electric charge like mass is a fundamental property of nature.
o Unlike mass, charge comes in 2 forms positive (+) and negative (-).
o Also, where gravity is always attractive; electric charge can be repulsiv
Assignment Light A
1) Convert the following E/M waves.
a. 758 nm to frequency
b. 2.52 x 1012 Hz to wavelength
2) What is the intensity of a 60.0 W point source 1.25 m away?
3) What is the critical angle of light moving from water to air?
4) Light parallel
o Magnets have two sides.
o One side is called North, the other South.
o Opposite sides attract. N S
o Same sides repel. N N S S
o The Earth has a magnetic field.
* The North magnetic pole is actually a South pole.
* The South magnetic
* Electric Potential Energy
* Symbol: U
* Unit: Joule, J
o Electrostatic force is conservative.
o If a charge is placed in a constant E field, it will experience a Force.
* If that charge is moved, work will be done.
v = v0 + a t
x = x0 + (v0 + v) t
x = x0 + v0 t + a t2
v2 = v02 + 2 a Dx
vav = vconstant = Dx/t
(S F = m a)
W = mg (weight)
Fr = m N (friction)
F = - k x (spring)
Fcp = m v2/r (centripetal)
Work and Energ
Assignment Chapter 22
1) For a uniform Magnetic Field, what must be the angle between the Area vector and
the field to give of the maximum Magnetic Flux?
2) A coil of wire has 4 turns. A constant and uniform magnetic field of 2.40 T is
incident on this co
Assignment Light part B
1) What is the distance between first order maxima from an interference pattern from
two slits? The wavelength of light is 546 nm, the slit separation d is 0.120 mm, and
the slit-screen separation is 55 cm. (Hint: Assume is small a
Group Work Chap 18
1) How many electrons are required to create a charge of -2.00 x 10-14 C?
2) Find the Force between a charge of + 2.00 C and 2.50 C placed 1.25 m apart?
3) Find the net force acting on a +2.50 C charge placed at the origin from 3 equal
Assignment Chapter 20
1) A current of 2.50 A flows through a circuit for 8.00 minutes. The current is supplied
by a 12.0 V battery. How much energy is used?
2) A total resistance of 12.0 is created when two resistors are placed into a circuit. If
one of t
What is really happening in space during the periods when we see Mars going through apparent
Earth and Mars are moving in opposite directions around the Sun.
Mars and the Sun both appear to be in the same constellation as viewed
Based on what you have learned from your rankings in Parts A and B, which of the following planets
would you expect to have seasons most like Earths?
Uranus (axis tilt = 97.9)
Jupiter (axis tilt = 3.1)
Mars (axis tilt = 25.2)