Ph 151 u Quiz #3
February 20, 2004 Name: 51% Jinan
Instructor: Patricia Wrean
Read each question carefully and show all of your work. Your method of solution must
be clearly presented and valid in order to obtain ill marks for each question. Be sure t
Ph151 2D Dynamics Supplemental Problems
1. Sue and Jenny kick a soccer ball at exactly the same time. Sues foot exerts a force of
23 N north, while Jennys foot exerts a force of 42 N east. If the mass of the soccer
ball is 0.75 kg (is this accurate? I hav
Physics 141: Module 2 Mechanical Waves
2.1: Types of Wave Motion
1. A fisherman notices that his boat is moving up and down periodically, owing to waves on the surface of water. It takes
2.5 s for the boat to travel form its highest point to its lowest po
Physics 141: Module 1 Periodic Motion
1.1: Mathematical Description of Simple Harmonic Motion
1. Show that the function = ( + ) satisfies the differential equation
2
2
= 2 .
2. A vertical spring stretches by 3.9 cm when a 10 g object is hung from it. T
Physics 141: Module 3 Sound Waves
3.1: Introduction to Sound Waves
1. A tuning fork is struck outdoors on a day when the air temperature is 8.5 oC. If the fork has a frequency of 512 Hz,
what is the wavelength of the sound wave?
2. You stand on a rock led
Module 4: Geometric Optics
4.1: The Nature of Light and the Ray Approximation
1. When two light rays encounter one another
a) They reflect off one another and each returns the way they came
b) They slightly divert each others course (they cause refraction
Module 6: Wave Optics
6.1: Interference and Youngs Double Slit Experiment
1. Diffraction occurs when light passes a:
a) pinhole.
b) narrow slit.
c) wide slit.
d) sharp edge.
e) all of the above
2. A plane wave is incident on a pair of slits whose whose wi
Module 5: Mirrors and Lenses
5.1: Images Formed by Flat Mirrors
1. When the reflection of an object is seen in a flat mirror, the image is:
a) real and upright
b) real and inverted
c) virtual and upright
d) virtual and inverted
2. An image formed when the